A Linux Journal article about Ardour.
The ardour homepage.
Jack - Audio Connection Kit
Jack design docs
The .asoundrc file.
Another link about using multiple sound cards under Linux.
Patchage is a graphical patch bay for Jack.
vkeybd is a virtual MIDI keyboard for Linux.
homerecording.com and prorec.com are two good discussion board websites about digital audio.
Finally, the massively awesome: El-Cheapo HOWTO to connect multiple sound cards together with Jack.
