The "Audio Interchange File Format" was developed by Apple for storage of sound in the data fork of Macintosh files. It has been adopted as a standard audio format by the OMFI (Open Media Format Interchange) group for cross-platform media exchange, which includes Silicon Graphics, Avid Technology and others.
AIFF

Mac-based professional digital audio recording systems and multimedia applications such as Macromedia Director, Adobe Premiere and Movie Player allow importing and exporting of AIFF files. Using this format, audio can be stored as mono or stereo, 16-bit or 8-bit, and at a wide range of sample rates. (See Low- resolution AIFF, WAV and QuickTime.)

High resolution AIFF files sound good, but they are LARGE! A 30-second stereo 16-bit, 44kHz (CD-quality) AIF file would be 5.4 MB. In order to make your download less time-consuming, I have truncated this music file to 12 seconds.

Play a 12-second stereo 16-bit, 44kHz (CD quality) music example
(2.1 MB) using the "AIFF" format and a helper app.