Homebrew Lameboy

[Anti]

OK, so I asked a similar question here ---> http://gbatemp.net/index.php?showtopic=242...p;#entry3004881

But I want to know, is there a PC program that will let me convert the bass sounds into high-pitched sounds on a mp3 file?

And how would I do it?

I have Goldwave and audacity on my PC.

Thanks