I might actually use yours until my take on this is done. It certainly looks superior to Subsonic in every way.
I'm still going to finish mine, because I have some different UI/design ideas. For instance, I want a visually-oriented player with cover art very prominently featured, whereas yours doesn't show art at all.
But on the technical side of things, the concept is rather identical. Have you tested it on a smartphone browser and does it work/look good? I didn't use Bootstrap like you, so I'll probably have to create a totally separate mobile interface.
Anyway, well done!