i've just wrapped up a major release of both of my plugin packages. you can find them on http://www.soundhack.com
now working on a universal binary version of soundhack.
here are the example audiounit plugins lrtoms and mstolr (left/right to mid/side and back again). if you have any questions, drop me a line.
plugins.au.tapeop.zip
here's a copy of dave's hand-out with the cookbook biquad filter code.
biquad.pdf
here are my plugin notes from the session - very condensed info on plugins
quickpluginnotes.pdf
and finally - luke wylie's compressor in the PD language
dynamo.zip
some good sites for plugin programming
http://www.musicdsp.org/ - lots of dsp code
http://www.smartelectronix.com/ - plugins - many with source code
happy hacking...
tomerbe@san.rr.com