Winamp Formatting Guide
 
Specifier Displays
%b Line break
%tab Tab
%wp Track title (as it appears in the Winamp playlist)
%wt Track info (title & artist - old style)
%min Minutes component of song length
%sec Seconds component of song length
%pm Current song position (minutes)
%ps Current song position (seconds)
%prc Percentage played of current song (useful for progressbars)
%sr Song sample rate (eg. 44kHz)
%r Song bitrate (eg. 128kbps)
%pl Playlist length (number of tracks)
%pp Position of current song in playlist
%prp Percentage played of playlist
%ch Song channel (Stereo/Mono)
%f Full path to currently playing file

ID3 tag info
 
Specifier Displays
%t Track name
%ar Track artist
%c Track comment
%al Track album
%y Track year
%g Track genre
%nt Track number
%cmp Composer
%e Encoder
%u URL
%cpr Copyright
%oa Original artist