diff --git a/package.json b/package.json
index 81ab32abc..2b8b3c750 100644
--- a/package.json
+++ b/package.json
@@ -106,6 +106,7 @@
     "@babel/plugin-transform-flow-strip-types": "^7.2.3",
     "@babel/preset-flow": "^7.0.0",
     "@babel/preset-react": "^7.0.0",
+    "@babel/register": "^7.0.0",
     "@hot-loader/react-dom": "16.8",
     "@lbry/color": "^1.0.2",
     "@lbry/components": "^2.2.4",
@@ -113,6 +114,7 @@
     "babel-eslint": "^10.0.1",
     "babel-loader": "^8.0.5",
     "babel-plugin-add-module-exports": "^1.0.0",
+    "babel-plugin-transform-imports": "^1.5.1",
     "chalk": "^2.4.2",
     "copy-webpack-plugin": "^4.6.0",
     "cross-env": "^5.2.0",
diff --git a/src/platforms/electron/.babelrc b/src/platforms/electron/.babelrc
new file mode 100644
index 000000000..db414b48b
--- /dev/null
+++ b/src/platforms/electron/.babelrc
@@ -0,0 +1,14 @@
+{
+  "presets": [
+    ["@babel/preset-env", { "useBuiltIns": "entry" }],
+    "@babel/react",
+    "@babel/flow"
+  ],
+  "plugins": [
+    "babel-plugin-transform-imports",
+    ["@babel/plugin-proposal-decorators", { "decoratorsBeforeExport": true }],
+    "@babel/plugin-transform-flow-strip-types",
+    "@babel/plugin-proposal-class-properties",
+    "babel-plugin-add-module-exports"
+  ]
+}
diff --git a/src/platforms/electron/devServer.js b/src/platforms/electron/devServer.js
index c6318529c..2a9e40c1e 100644
--- a/src/platforms/electron/devServer.js
+++ b/src/platforms/electron/devServer.js
@@ -65,4 +65,8 @@ mainInstance.waitUntilValid(() => {
   const proc = require('child_process');
 
   const child = proc.spawn(electron, ['./dist/electron/main.js']);
+
+  child.stdout.on('data', (data) => {
+    console.log(data.toString());
+  });
 });
diff --git a/src/platforms/electron/index.js b/src/platforms/electron/index.js
index 4bfc2db64..da2d13596 100644
--- a/src/platforms/electron/index.js
+++ b/src/platforms/electron/index.js
@@ -13,7 +13,7 @@ import Daemon from './Daemon';
 import createTray from './createTray';
 import createWindow from './createWindow';
 import pjson from '../../../package.json';
-// import startSandbox from './startSandbox';
+import startSandbox from './startSandbox';
 
 autoUpdater.autoDownload = true;
 
@@ -36,13 +36,9 @@ let daemon;
 const appState = {};
 
 const installExtensions = async () => {
-  // // eslint-disable-next-line import/no-extraneous-dependencies,global-require
-  // const installer = require('electron-devtools-installer');
-  // // eslint-disable-next-line import/no-extraneous-dependencies,global-require
-  // const devtronExtension = require('devtron');
-  // const extensions = ['REACT_DEVELOPER_TOOLS', 'REDUX_DEVTOOLS'];
-  // await devtronExtension.install();
-  // return Promise.all(extensions.map(name => installer.default(installer[name]))).catch(console.log);
+  // eslint-disable-next-line import/no-extraneous-dependencies,global-require
+  const devtronExtension = require('devtron');
+  return await devtronExtension.install();
 };
 
 app.setAsDefaultProtocolClient('lbry');
@@ -89,7 +85,7 @@ app.on('ready', async () => {
     daemon.launch();
   }
 
-  // startSandbox();
+  startSandbox();
 
   if (isDev) {
     await installExtensions();
diff --git a/src/platforms/electron/sandboxTest.js b/src/platforms/electron/sandboxTest.js
new file mode 100644
index 000000000..32dc9edbc
--- /dev/null
+++ b/src/platforms/electron/sandboxTest.js
@@ -0,0 +1,4 @@
+require('@babel/register');
+require("@babel/polyfill");
+
+require('./startSandbox.js')();
diff --git a/src/platforms/electron/startSandbox.js b/src/platforms/electron/startSandbox.js
index 3b0de06ae..6912911de 100644
--- a/src/platforms/electron/startSandbox.js
+++ b/src/platforms/electron/startSandbox.js
@@ -1,28 +1,32 @@
-// import express from 'express';
-// import unpackByOutpoint from './unpackByOutpoint';
+import express from 'express';
+import unpackByOutpoint from './unpackByOutpoint';
 
-// // Polyfills and `lbry-redux`
-// global.fetch = require('node-fetch');
+// Polyfills and `lbry-redux`
+global.fetch = require('node-fetch');
+global.window = global;
+if (typeof(global.fetch) === 'object') {
+  global.fetch = global.fetch.default;
+}
 
-// global.window = global;
-// // eslint-disable-next-line import/no-commonjs,global-require
-// const { Lbry } = require('lbry-redux');
+// eslint-disable-next-line import/no-commonjs,global-require
+const { Lbry } = require('lbry-redux');
 
-// delete global.window;
+delete global.window;
 
-// export default async function startSandbox() {
-//   const sandbox = express();
-//   const port = 5278;
+export default async function startSandbox() {
+  const sandbox = express();
+  const port = 5278;
 
-//   sandbox.get('/set/:outpoint', async (req, res) => {
-//     const { outpoint } = req.params;
-//     const resolvedPath = await unpackByOutpoint(Lbry, outpoint);
+  sandbox.get('/set/:outpoint', async (req, res) => {
+    const { outpoint } = req.params;
 
-//     sandbox.use(`/sandbox/${outpoint}/`, express.static(resolvedPath));
+    const resolvedPath = await unpackByOutpoint(Lbry, outpoint);
 
-//     res.send(`/sandbox/${outpoint}/`);
-//   });
+    sandbox.use(`/sandbox/${outpoint}/`, express.static(resolvedPath));
 
-//   // eslint-disable-next-line no-console
-//   sandbox.listen(port, 'localhost', () => console.log(`Sandbox listening on port ${port}.`));
-// }
+    res.send(`/sandbox/${outpoint}/`);
+  });
+
+  // eslint-disable-next-line no-console
+  sandbox.listen(port, 'localhost', () => console.log(`Sandbox listening on port ${port}.`));
+}
diff --git a/src/ui/component/fileViewer/internal/player.jsx b/src/ui/component/fileViewer/internal/player.jsx
index ed78026d1..08c1a4fe5 100644
--- a/src/ui/component/fileViewer/internal/player.jsx
+++ b/src/ui/component/fileViewer/internal/player.jsx
@@ -202,7 +202,9 @@ class MediaPlayer extends React.PureComponent<Props, State> {
     }
     const playerElement = this.mediaContainer.current;
     if (playerElement) {
-      playerElement.children[0].play();
+      if(playerElement.children && playerElement.children[0]) {
+        playerElement.children[0].play();
+      }
     }
   }
   // @endif
@@ -254,13 +256,19 @@ class MediaPlayer extends React.PureComponent<Props, State> {
     // This is what render-media does with unplayable files
     const { claim, fileName, downloadPath, contentType } = this.props;
 
+    console.log('render', contentType, MediaPlayer.SANDBOX_TYPES)
+
     if (MediaPlayer.SANDBOX_TYPES.indexOf(contentType) > -1) {
+      console.log('claim', claim)
       const outpoint = `${claim.txid}:${claim.nout}`;
 
+      console.log('fetch', `${MediaPlayer.SANDBOX_SET_BASE_URL}${outpoint}`)
+
       return fetch(`${MediaPlayer.SANDBOX_SET_BASE_URL}${outpoint}`)
         .then(res => res.text())
         .then(url => {
           const fileSource = { url: `${MediaPlayer.SANDBOX_CONTENT_BASE_URL}${url}` };
+          console.log('set source', fileSource)
           return this.setState({ fileSource });
         });
     }
@@ -324,6 +332,9 @@ class MediaPlayer extends React.PureComponent<Props, State> {
     const { fileSource } = this.state;
 
     const isFileType = this.isSupportedFile();
+
+    console.log('isFileType', isFileType);
+
     const isFileReady = fileSource && isFileType;
     const isPlayableType = this.playableType();
     const { isLoading, loadingStatus } = this.showLoadingScreen(isFileType, isPlayableType);
diff --git a/yarn.lock b/yarn.lock
index dd40e4eba..bbcf4e69e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -714,6 +714,19 @@
     "@babel/plugin-transform-react-jsx-self" "^7.0.0"
     "@babel/plugin-transform-react-jsx-source" "^7.0.0"
 
+"@babel/register@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.0.0.tgz#fa634bae1bfa429f60615b754fc1f1d745edd827"
+  integrity sha512-f/+CRmaCe7rVEvcvPvxeA8j5aJhHC3aJie7YuqcMDhUOuyWLA7J/aNrTaHIzoWPEhpHA54mec4Mm8fv8KBlv3g==
+  dependencies:
+    core-js "^2.5.7"
+    find-cache-dir "^1.0.0"
+    home-or-tmp "^3.0.0"
+    lodash "^4.17.10"
+    mkdirp "^0.5.1"
+    pirates "^4.0.0"
+    source-map-support "^0.5.9"
+
 "@babel/runtime@^7.1.2", "@babel/runtime@^7.2.0":
   version "7.3.4"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.3.4.tgz#73d12ba819e365fcf7fd152aed56d6df97d21c83"
@@ -1491,6 +1504,18 @@ babel-plugin-component@^1.1.1:
   dependencies:
     "@babel/helper-module-imports" "7.0.0-beta.35"
 
+babel-plugin-transform-imports@^1.5.1:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-imports/-/babel-plugin-transform-imports-1.5.1.tgz#b3756696aea907719d0d63b0e67c88fba963adb0"
+  integrity sha512-Jkb0tjqye8kjOD7GdcKJTGB3dC9fruQhwRFZCeYS0sZO2otyjG6SohKR8nZiSm/OvhY+Ny2ktzVE59XKgIqskA==
+  dependencies:
+    babel-types "^6.6.0"
+    is-valid-path "^0.1.1"
+    lodash.camelcase "^4.3.0"
+    lodash.findkey "^4.6.0"
+    lodash.kebabcase "^4.1.1"
+    lodash.snakecase "^4.1.1"
+
 babel-polyfill@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-polyfill/-/babel-polyfill-6.26.0.tgz#379937abc67d7895970adc621f284cd966cf2153"
@@ -1508,6 +1533,16 @@ babel-runtime@6.x, babel-runtime@^6.26.0:
     core-js "^2.4.0"
     regenerator-runtime "^0.11.0"
 
+babel-types@^6.6.0:
+  version "6.26.0"
+  resolved "https://registry.yarnpkg.com/babel-types/-/babel-types-6.26.0.tgz#a3b073f94ab49eb6fa55cd65227a334380632497"
+  integrity sha1-o7Bz+Uq0nrb6Vc1lInozQ4BjJJc=
+  dependencies:
+    babel-runtime "^6.26.0"
+    esutils "^2.0.2"
+    lodash "^4.17.4"
+    to-fast-properties "^1.0.3"
+
 bail@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/bail/-/bail-1.0.3.tgz#63cfb9ddbac829b02a3128cd53224be78e6c21a3"
@@ -4955,6 +4990,11 @@ hoist-non-react-statics@^3.1.0, hoist-non-react-statics@^3.3.0:
   dependencies:
     react-is "^16.7.0"
 
+home-or-tmp@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-3.0.0.tgz#57a8fe24cf33cdd524860a15821ddc25c86671fb"
+  integrity sha1-V6j+JM8zzdUkhgoVgh3cJchmcfs=
+
 homedir-polyfill@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/homedir-polyfill/-/homedir-polyfill-1.0.3.tgz#743298cef4e5af3e194161fbadcc2151d3a058e8"
@@ -5477,6 +5517,11 @@ is-extendable@^1.0.1:
   dependencies:
     is-plain-object "^2.0.4"
 
+is-extglob@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-1.0.0.tgz#ac468177c4943405a092fc8f29760c6ffc6206c0"
+  integrity sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=
+
 is-extglob@^2.1.0, is-extglob@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
@@ -5506,6 +5551,13 @@ is-function@^1.0.1:
   resolved "https://registry.yarnpkg.com/is-function/-/is-function-1.0.1.tgz#12cfb98b65b57dd3d193a3121f5f6e2f437602b5"
   integrity sha1-Es+5i2W1fdPRk6MSH19uL0N2ArU=
 
+is-glob@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-2.0.1.tgz#d096f926a3ded5600f3fdfd91198cb0888c2d863"
+  integrity sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=
+  dependencies:
+    is-extglob "^1.0.0"
+
 is-glob@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-3.1.0.tgz#7ba5ae24217804ac70707b96922567486cc3e84a"
@@ -5533,6 +5585,13 @@ is-installed-globally@^0.1.0:
     global-dirs "^0.1.0"
     is-path-inside "^1.0.0"
 
+is-invalid-path@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/is-invalid-path/-/is-invalid-path-0.1.0.tgz#307a855b3cf1a938b44ea70d2c61106053714f34"
+  integrity sha1-MHqFWzzxqTi0TqcNLGEQYFNxTzQ=
+  dependencies:
+    is-glob "^2.0.0"
+
 is-nan@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/is-nan/-/is-nan-1.2.1.tgz#9faf65b6fb6db24b7f5c0628475ea71f988401e2"
@@ -5666,6 +5725,13 @@ is-utf8@^0.2.0:
   resolved "https://registry.yarnpkg.com/is-utf8/-/is-utf8-0.2.1.tgz#4b0da1442104d1b336340e80797e865cf39f7d72"
   integrity sha1-Sw2hRCEE0bM2NA6AeX6GXPOffXI=
 
+is-valid-path@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/is-valid-path/-/is-valid-path-0.1.1.tgz#110f9ff74c37f663e1ec7915eb451f2db93ac9df"
+  integrity sha1-EQ+f90w39mPh7HkV60UfLbk6yd8=
+  dependencies:
+    is-invalid-path "^0.1.0"
+
 is-whitespace-character@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-whitespace-character/-/is-whitespace-character-1.0.2.tgz#ede53b4c6f6fb3874533751ec9280d01928d03ed"
@@ -6176,11 +6242,21 @@ lodash.assign@^4.0.3, lodash.assign@^4.0.6, lodash.assign@^4.2.0:
   resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
   integrity sha1-DZnzzNem0mHRm9rrkkUAXShYCOc=
 
+lodash.camelcase@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz#b28aa6288a2b9fc651035c7711f65ab6190331a6"
+  integrity sha1-soqmKIorn8ZRA1x3EfZathkDMaY=
+
 lodash.clonedeep@^4.3.2:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz#e23f3f9c4f8fbdde872529c1071857a086e5ccef"
   integrity sha1-4j8/nE+Pvd6HJSnBBxhXoIblzO8=
 
+lodash.findkey@^4.6.0:
+  version "4.6.0"
+  resolved "https://registry.yarnpkg.com/lodash.findkey/-/lodash.findkey-4.6.0.tgz#83058e903b51cbb759d09ccf546dea3ea39c4718"
+  integrity sha1-gwWOkDtRy7dZ0JzPVG3qPqOcRxg=
+
 lodash.forin@^4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/lodash.forin/-/lodash.forin-4.4.0.tgz#5d3f20ae564011fbe88381f7d98949c9c9519731"
@@ -6201,6 +6277,11 @@ lodash.isequal@4.5.0, lodash.isequal@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.isequal/-/lodash.isequal-4.5.0.tgz#415c4478f2bcc30120c22ce10ed3226f7d3e18e0"
   integrity sha1-QVxEePK8wwEgwizhDtMib30+GOA=
 
+lodash.kebabcase@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/lodash.kebabcase/-/lodash.kebabcase-4.1.1.tgz#8489b1cb0d29ff88195cceca448ff6d6cc295c36"
+  integrity sha1-hImxyw0p/4gZXM7KRI/21swpXDY=
+
 lodash.memoize@^4.1.2:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
@@ -6221,6 +6302,11 @@ lodash.set@^4.3.2:
   resolved "https://registry.yarnpkg.com/lodash.set/-/lodash.set-4.3.2.tgz#d8757b1da807dde24816b0d6a84bea1a76230b23"
   integrity sha1-2HV7HagH3eJIFrDWqEvqGnYjCyM=
 
+lodash.snakecase@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/lodash.snakecase/-/lodash.snakecase-4.1.1.tgz#39d714a35357147837aefd64b5dcbb16becd8f8d"
+  integrity sha1-OdcUo1NXFHg3rv1ktdy7Fr7Nj40=
+
 lodash.tail@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/lodash.tail/-/lodash.tail-4.1.1.tgz#d2333a36d9e7717c8ad2f7cacafec7c32b444664"
@@ -6954,6 +7040,11 @@ node-loader@^0.6.0:
   resolved "https://registry.yarnpkg.com/node-loader/-/node-loader-0.6.0.tgz#c797ef51095ed5859902b157f6384f6361e05ae8"
   integrity sha1-x5fvUQle1YWZArFX9jhPY2HgWug=
 
+node-modules-regexp@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz#8d9dbe28964a4ac5712e9131642107c71e90ec40"
+  integrity sha1-jZ2+KJZKSsVxLpExZCEHxx6Q7EA=
+
 node-pre-gyp@^0.10.0:
   version "0.10.3"
   resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.10.3.tgz#3070040716afdc778747b61b6887bf78880b80fc"
@@ -7613,6 +7704,13 @@ pinkie@^2.0.0:
   resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
   integrity sha1-clVrgM+g1IqXToDnckjoDtT3+HA=
 
+pirates@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/pirates/-/pirates-4.0.1.tgz#643a92caf894566f91b2b986d2c66950a8e2fb87"
+  integrity sha512-WuNqLTbMI3tmfef2TKxlQmAiLHKtFhlsCZnPIpuv2Ow0RDVO8lfy1Opf4NUzlMXLjPl+Men7AuVdX6TA+s+uGA==
+  dependencies:
+    node-modules-regexp "^1.0.0"
+
 pkcs7@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pkcs7/-/pkcs7-1.0.2.tgz#b6dba527528c2942bfc122ce2dafcdb5e59074e7"
@@ -10062,6 +10160,11 @@ to-buffer@^1.1.1:
   resolved "https://registry.yarnpkg.com/to-buffer/-/to-buffer-1.1.1.tgz#493bd48f62d7c43fcded313a03dcadb2e1213a80"
   integrity sha512-lx9B5iv7msuFYE3dytT+KE5tap+rNYw+K4jVkb9R/asAb+pbBSM17jtunHplhBe6RRJdZx3Pn2Jph24O32mOVg==
 
+to-fast-properties@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
+  integrity sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=
+
 to-fast-properties@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-2.0.0.tgz#dc5e698cbd079265bc73e0377681a4e4e83f616e"