julianxhokaxhiu/chrome-grooveshark-mediakeys-reloaded — pull request #3 by SpyTec (2014-10-14 13:59:01+00:00)
Title: Added support for VirtualKeys for Windows users

As per http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731%28v=vs.85%29.aspx

Saw your message on Google Hangouts, figured I show what I did. Although it's pretty simple it should be available on all keyboards on Windows os's.

But as I can't test it I'd recommend testing it yourself before publishing it