Partly, because I'm disappointed I won't be able to try it, and partly out of curiosity, what was the reason for not just making this an HTML5 web app? Was there some functionality you couldn't get from Web APIs?
There's also Last.fm. Everything I listen to (or at least as much as reasonably possible) get's scrobbled. I believe it's this feed that my songkick account uses. It'd be nice to get integration with that!