Bakkster writes: Independent artists will be able to use the XNA to produce the note-charts for their music and sell them in game later this year. Bands will use their original song masters and generate a MIDI file that produces the game 'gems' that players follow along to. Tracks must pass a review process with other XNA members, then a final approval from MTV Games. Songs can be sold between 50 cents and $3, with the artist getting a 30% cut after MTV and Microsoft take their cut. The best tracks will also make their way to the PS3 after a 30 day exclusive period.