Well, that
>>2 was more a smart-ass remark than anything else. You can get a convolver to do
anything (and I mean it), but you'll first need to make an appropriate impulse file. Most people neither have the time, skill, or need to make such a thing.
If you really want to munge around with already-made impulse waveforms, download the *_impulses.zip here:
http://sjeng.org/ftp/fb2k/
But you're better off digging through here for friendlier software:
http://wiki.hydrogenaudio.org/index.php?title=Foobar2000:Components_0.9