AAC is not an Apple standard, it is an MPEG standard and (for example) supported by many newer mobile phones with build-in digital audio player. The iTMS AAC files have DRM added, but that has nothing to do with AAC in general.
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vladoman:
AAC is not an Apple standard, it is an MPEG standard and (for example) supported by many newer mobile phones with build-in digital audio player. The iTMS AAC files have DRM added, but that has nothing to do with AAC in general.