Who stole my MIDIs?

Hi,
I recently installed a trail version of FruityLoops, and shortly thereafter (not immediately however), Winamp stopped playing MIDI's, it would act as it if were playing them, but no sound came out of the speakers (yeah, they're turned on). I've uninstalled Fruity Loops, and i still can't play MIDI's on my system, i've tried every version of Winamp that I have, Media Player, Quicktime, and bunch of other no-name media players, and still no midis. Anyone have any ideas as to what is causing this?

Thanks
-George

What sound card do you have. IIRC, my SB Live Value won't play MIDI's if you kill a background helper application it runs.