MegaSeg DJ edition offers all the core mixing features you need plus lots of extras. It combines fast access and elegant management of any media library, including iTunes playlists, with power features designed for club DJs and mobile DJs. MegaSeg delivers the tools.
Professional audio mixer for Mac OS.
MegaSeg Pro is a professional music mixing application.
Add files dropped onto iTunes library and copy them to a specific user playlist.
The SonicCell play list editor is a tool that lets you manage lists of songs.
Simple applescript to export a playlist from itunes to a memory stick.