Help Making 8-Bit Sounds

Hello all, one of my iPhone games is almost complete. The only thing that it is missing is SOUND. I was wondering if any one can supply me with a collection of 8-Bit sounds free for commercial use or provide me with help on creating my own sounds. Thanks in advance.

http://www.drpetter.se/project_sfxr.html

Download Famitracker and make your sounds/music in there. Authentic nintendo 8bit sound