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iTunes sells AAC music files: music that you can listen to on any device that supports AAC, which is a part of the MPEG-4 standard (just like MP3 is a part of t
by inklesspen 16y ago
iTunes sells AAC music files: music that you can listen to on any device that supports AAC, which is a part of the MPEG-4 standard (just like MP3 is a part of the MPEG-1 and MPEG-2 standards). This AAC music used to be sold with Apple DRM on it, but no longer does. And of course there is a technical advantage; AAC sounds better at low bit rates than MP3 does.