Florian Hollerweger's website
Audio output working Koen's recent Angstrom demo image; switching between standard image and the Angstrom image
Installing Koen's unofficial Angstrom Open Embedded image on the Beagle Board. And some preliminary research on how to get Pure Data to run on the board.
Today I got Linux - and audio! - working on the Beagle Board. And my HL-340 USB-to-serial adaptor under Linux.