Try looking through the directory for AIM and remove all *.wav files, this may remove the annoying audio ad. Dont just delete them, move them to a seprate folder. you can play each one also, in another audio player, so you dont remove any audio files you wish to keep.
If the ad is being sent via the ad server, then you cant remove it, you may be able to block the ad from being sent into your computer.
By the way, there was absolutely NO need to post this same message in every single board. The others have been deleted.