Do you think this would also work with Grooveshark? The problem with YouTube is that most music videos are geo-blocked outside the US, or at least for my country they are. (So are Pandora, Spotify, etc.) Furthermore I believe that Grooveshark's song library is bigger anyway, so it would be an improvement for everyone.

Grooveshark offers widgets, so in theory it could work. http://widgets.grooveshark.com/make