I have just put a new version of LyonPotpourri online over here:
http://disis.music.vt.edu/eric/LyonSoftware/Pd/LyonPotpourri/
For those familiar with the previous version, new developments include:
several new externals to facilitate spatial processing
a set of externals to facilitate spectral coding along the lines of the
Max/MSP pfft~ system
The distribution is ready for Linux and OSX. Any Windows developer who would like to make the collection available on that platform, please contact me off list.
Enjoy,
Eric