I believe that was the basic concept behind Turntable.fm (RIP). There were a number of competitors but I think they may have all bitten the dust as well.<p>Sad, because (like you) I love the idea of being able to sync my music with someone else.<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Turntable.fm" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Turntable.fm</a>