Firefox Extensions?

Are there any good firefox extensions that turn down the volume on games, so I can like, play a flash game and have my music in the background w/o having to pause winamp for the audio in the flash?

This would be very helpful in place of having to hear both the flash and the winamp at the same time. Also, is firefox on a different audio line on the PC? Cause if so I can just adjust that in my volume settings on windows.

Thanks for reading, y'all

Also, Firefox is superior due to it's large community; responsiveness to bugs; and hundreds upon hundreds of useful extensions.

Not that IE doesn't have those; but for IE it's just spyware toolbars for Yahoo, which are useless.

Same as >>26 by the way.