Freak out (!), because another music legend's starting to bite the iTunes pie. With the well-documented Beatles-on-iTunes saga well behind us, it's time for the late Frank Zappa to become one of the most recent artists to join Cupertino's media repertoire. This means that there's now over 50 of Zappa's albums up for your downloading / listening pleasure inside Apple's renowned application -- some of which have been remastered, a
