Speaking of skins, I remember the debate between incumbent Winamp and newcomer Sonique: https://www.google.com/search?q=sonique+media+player

Other than skins, the other most frequented activity was finding new, trippy visualizations (https://www.google.com/search?q=geis+plugin) - ahh college.

And this! "Uses the acutal skin assets, so it's compatible with all skins" - gotta try this