Convert The problem with AIFF files is their size. They are huge. On average, AIFF files are ten times as large as MP3s. If you plan to build a collection of music, you must store them in a more compact format, either MP3 or Ogg Vorbis. Unfortunately, it is also encumbered in patents and licensing fees that the program authors must pass on to the public in some way.
Free tools are available to change an AIFF file into either format.
The MP3 converter I recommend is BladeEnc . Both converters are designed to work when an AIFF file is simply dragged and dropped onto them. This will be fixed in version 1.0.4d2, which will probably be available by the time you read this. Play the music file. A good handful of Macintosh programs play MP3s, and a smaller but growing number play Ogg files.