MPlay - Free multimedia player for the Macintosh including support for MP3 files. Also features the use of skins, ID3 tags, playlists, track mixing, pitch adjust, overlapping, and fading. MusicAgain - Fair sized listing of mostly Macintosh MP3 software including players, encoders, other programs and utilities. Converts one format to another, plays digital music and videos, and supports playlists. On Air 2.0 - Virtual MP3 radio studio or a virtual DJ mixer for Macintoshes.
Site contains a list of features, a FAQ, and a shareware version for download.
QuickAmp - Full featured MP3 player for the Macintosh. Site lists features, recent updates, skins and troubleshooting. SoundApp - Freeware sound player and converter for the Macintosh. Free version available for download. Allows users to mix and play music with a macintosh mouse and keyboard.