In the playlist yes.
My ATF that I've always use is %artist% - %title% | $filepart(%filename%)
Idk if it helps, I'm using x86 WACUP specifically to have skin support (for the 2006 Drone skin).
Idk what else to tell you. I just double-click on my playlist with SomaFM radio stations and in WACUP playlist I see only the result of " - | $filepart(%filename%)" if the item time is set to -1 in the playlist. If to set it to greater than 0 then I see the title as in the playlist file.