One source suggested they will be marketed as enhanced downloads in much the same way Apple offers high-quality, unprotected music files from EMI. In that model, iTunes charges $1.29 for premium EMI tracks vs. 99 cents for standard song downloads.

In a new twist, iPhone users will have the ability to choose any part of the song they want as their ringtone. Most major ringtone offerings from Verizon, AT&T or Sprint feature pre-determined samples. For consumers who don't want to design personalized ringtones, Apple will also sell traditional music ringtones.