WHAT IS AIFF?
Audio Interchange File Format
AIFF, or Audio Interchange File Format, was created by Apple and is based on the IFF (Interchange File Format). The AIFF file type is widely used for storing audio on Mac systems. If you don’t know how to open AIFF files for playback, check out the list of programs below.
The AIFF format contains uncompressed audio encoded with pulse-code modulation. AIFF files are made up of chunks that define sound characteristics and other related data. The AIFF specification requires Common Chunk and Sound Data Chunk; other chunks are optional.
You can play AIFF files with iTunes, QuickTime Player, Media Player Classic, and VLC