why the main mixer in particular? I think you could use girder for that.....
for a good winamp plugin try the UIR webpage (the homebrew IRMan webpage)
www.geocities.com/SiliconValley/Sector/3863/uir/
just noticed your Van Halen avatar too!!! nice work mate!!! Im guessing your a huge fan? Van Halen always sounds nice in my car with the subs going.... sweet! Panama, Poundcake.... its all good!