hi there,
i have the emi 2|6 usb audio device, it is a usb device with multichannel (6) output. for a while, there has been a driver in the linux kernel that uploads the firmware, but there was a problem in that the oss usb audio driver could only handle stereo output. this has since been remedied with a patch (not sure if it has been applied to the kernel yet, email me and i'll find it if you are interested), and it is now possible to use all 6 channels. this works for me in programs like xine, for playing 5.1 encoded dvds. in pd however, when using the -outchannels option to select 6 channels, i just get stereo output, and when i try to use channels 3,4,5 or 6, it just adds a kind of high pitched screeching to the first two channels.
i thought it would work the same way the rme oss driver works?
maybe i'll look into this myself, but i thought i'd pop a mail about it incase anyone else has any ideas.
pix.