well i cant help it.... have to plug my plugin :P
(only old version on winamp, for new version and screen shots follow the link at the bottom)
my premise is "logging" but it can do a lot more then that
You set what you want to log, including all the mp3 info and any time related option as well.
You can make playlists by just naming the filez .m3u and logging only the filename
You can add the current song to a logfile (can have as many logs as you want) by using hotkeys and/or mouseclicks on the sytem tray icon. Like I keep seperate logs going for incomplete songs, awesome songs, songs with pops, songs that have long periods of silence on them, etc..... and just have them mapped to ctrl-alt-F1, F2 etc
Also can log all songs and have features like log only after XX secs. and log only while you are at the computer
NOTE: the newest version is not on winamp (yet) so for info and the plugin just go here: