An audio streaming extension that seeks for links to music and recordings on the sites you visit.
Extereo is a Web Extension which scans for references to audio sources in the sites you visit and enables you to easily create playlists with them which you can listen to while you browse the web without having to keep multiple tabs open.
UPDATE: after the Chrome Web Store forces extensions to use Manifest V3, this extension will no longer work as background audio playback will not be supported anymore.