LinuxJournal: "The two programs I discuss are Gmurf and Broadcast 2000, the latter of which had a nice introductory article in the January 2001 issue of Linux Journal. Neither program requires root privileges to install or run,
and both are easy to install and run (just follow the documentation), so I won't cover that here.
The only other things you'll need aren't computer-related at all and consist of noise-making items (such as your voice or a pan and spoon), studio gear (such as a 48-channel powered mixing board with DSP or a
Wah-Wah pedal) and a mic or three."