Clone of WinCue for Winamp. Medialibrary for extreme quick access. Textphrases, regular expressions, foldernames limits tracks to certain files/songs. Tested with Xmms, but adjustable for any command-line supported Player. AutoCue need InfoPipe and Xmms.
M3U-Playlist-Manager: Administration of loose m3u-playlists in tree structure. Simple mouse-click to add or remove a song from playlist with currently running Song in the Player. And other interesting functions. Supporting only XMMS at the moment:-(