Okay guys, here it is: http://www.bfxr.net/
This is a site that allows simple, but good quality sound creation for a variety of games. You can save the sounds as .wav, which can then be exported to GE. The sounds can be anywhere from a coin pickup, to a damage noise, static, explosions, ect. There are a ton of adjustable bars to change the sound in whatever way you want. I have used this in quite a few different ways, and you can experiment with it however you want.
Have Fun!
(A +1 for showing this???)
~moonforge