Hi,
I hope you forgive this rather commercial announcement: The leading german computer magazine c't today published a special issue "Linux" which includes among many other articles two articles by me, one on configuring audio on Linux, the other gives short introductions to the most important audio applications. As you can guess by me being the author, I consider Pd one of these, so there also is a section on Pd. And a picture of Claudius Maximus. ;)
More info: http://www.heise.de/kiosk/special/ct/06/05/
Ciao