Hello!
Finally noticed this was a thing, and wow do I love WACUP! The whole reason I found out about this is I was trying to look for a way to set my EQ based on a song's metadata, since I have way way way too many individual songs, and setting the EQ on them all individually would literally take days. I couldn't find a single remnant of any previous plugins that did this for winamp, but I did find links to WACUP, and so I figured I'd post here? I searched a few times to try and check if this had already been posted, and I couldn't find anything that would lead me to believe it had already been posted, so
here it is.
tldr; too many songs to set auto eq individually, genre based auto-eq settings