Information Updated Description
Audio Interpolation
22.07.99
Explains what audio interpolation is and how it works
SNES->APU Transfers
09.10.01
Shows how the transfer protocol works for getting data from ROM into the APU of the SNES
SNES S/PDIF Output
04.08.03
Shows how to add a DAI->S/PDIF transmitter so you can plug your SNES into a digital stereo receiver
Winamp Templates
05.09.99
Have you tried making a skin for Winamp, but were disappointed by the lack of documentation?  This is an explanation of each graphic and text file used in the skin.
(It's not completed yet, but should give a solid base for any design project.)