I kind'o put the fairly new ads in Winamp/Shoutcast aside, ignoring them...but really, they get incredibly annoying when the ad takes time to load, and takes up half of the previously-viewable area. Nonetheless, I finally searched and found a simple solution...
(Note, buying Winamp Pro will not remove the ads.)
Apparently they're using limited ad servers, so if you just add these two entries to your hosts file, you'll be good for the present time: Noting that your hosts file is in "C:\Windows\System32\drivers\etc". For a full description and rants galore (for good reason),
visit where I got it from. It's nice being ad-free, once again...