Ask HN: Does your startup have an online jukebox?

A few startups in my area have built their own online collaborative jukebox that allows them all to collaborate on music/listen to the same thing using Grooveshark as a backend and allows for up/downvotes, but none of them have made theirs open source. Has anyone else come across anything like this and has anyone found anything that's open source? I'm hoping to spin one up at our company but don't want to reinvent the wheel if I don't have to.