Apple savo iTunes puslapyje teigia, kad:

AAC encoding compresses much more efficiently than older formats (such as MP3, which iTunes still supports), while delivering quality rivaling that of uncompressed CD audio. In fact, expert listeners have judged AAC audio files compressed at 128 Kbps (stereo) to be virtually indistinguishable from the original uncompressed audio source.

(originalas: http://www.apple.com/ilife/itunes/)

Va ekspertai ir pasakykit, ar verta su tuo AAC prasidet?
Ta prasme butu pakankamai paprasta ir patogu po viena kurineli pirkti, vietoje viso disko. Ir daug pigiau gautusi normalia muzikine kolekcija susirinkt to, ko nori, o ne to, ka tau kisa irasu studijos.