if you want to hear galgalatz on your chrome folow this steps:
It’s really easy to test a new extension in Chrome. Type “chrome://extensions” in a tab to bring up the extensions page.
Once on this page, check “Developer mode” to enable loading unpacked extensions. This will allow you to load your extension from a folder. Finally, click “Load unpacked extension” or simply drag the project folder onto the page to load up the extension. You should immediately see the extension show up as a Browser Action with your icon in the toolbar window of the current tab.