a few different sizes...which one?
# of songs is pretty obvious
length of playlist - It says the length of the playlist down in the bottom right corner. First load the playlist, then if you dont have "read all metatags on load"(pref>titles), then select all (ctrl+a) > goto playlist editor > misc > read extend info on selected files...
this is also true for playlists that are saved in the ML
Filesize of songs in playlist (like if you wanted to make a playlist to burn a 700mb mp3 cd) - this one doesnt come standard with winamp. Add the playlists as roots to
Dynamic Library...theres a readme for more info.