This is pretty cool! I use YouTube for music all the time -- I'm not quite sure. I keep finding music apps that aren't quite right, and don't have what I want to hear (or not set up how I want to use them), and I end up back at YouTube, which indeed sucks for this.
No useful advice at the moment, beyond a vague suggestion to revisit the domain name choice (if somehow you're not wedded to this one by now, and you see many other folks with reactions like mine). I'm still not quite sure of the intended reading, but first I saw a slightly jumbled "tubgirl"(!), then I saw "two-baller"; now I'm stuck with a reference to "tubal" (as in tubal ligation? ...) with a flickr-style ending. Maybe just put an "about" link somewhere that gives a hint?