Sorry for treading on your toes then! :) Feel free to email us at dev@beatmaticapp.com, and we can have a chat about implementation. There's a lot of rough edges and it would be great to talk with someone who's dealing with the same issues!
Damn i was working on something like this too :-P
Congrats, it sounds cool.
I've been working on this app, too! For Android. We should all have pow-wow about our approaches. karl.hiner@gmail.com
Would be great to hear from you and work together.. drop us a email!