so i heard of this "guitar hero like" game where you can basically play a "guitar hero" style game to your own mp3s and the ipod is supposed to make the track for you so you can play it... is this true? and if so what is the game called and where can i get it?
once you buy it, does it ever charge you again for it in the future? like for example, once a month? and if you buy an app that costs money, can you keep it forever?