Thanks for all the help guys. Im still trying to work out how JACK works... the end-user docs for its operation are almost non-existant. All i seem to find are devel docs and simple FAQ's like those on the JACK website. I dont have X installed, so all these nice X windows JACK utils are useless to me. And no... im not going to install X either. If im going to use JACK to tie all this together, my first problem is getting it working with a multichannel ALSA device. The output card is a Envy24HT... i have asound.conf setup for a PCM per stereo output (evny_1, envy_2, etc). How do i tie these channels together to make a single 10 channel device that JACK can then output to? Ive tried using "type multi" for a PCM device in asound, but i cannot get it to work.... even this doesnt work: pcm.multi { type multi; slaves.a.pcm "envy_1"; slaves.a.channels 2; bindings.0.slave a; bindings.0.channel 0; bindings.1.slave a; bindings.1.channel 1; } where "envy_1" looks like: pcm.envy_1 { type plug slave.pcm { type hw card 1 device 0 subdevice 0 } } aplay to "envy_1" works fine. aplay to "multi" says its working, but gives no sound output. Ill leave it there.... Ill mention the second problem, when this is worked out. Thanks again everyone. > Hi, > Zitat von Arnold Krille <arnold@xxxxxxxxxxxxx>: > > > On Tuesday 16 March 2004 12:01, Mark Williams (MWP) wrote: > > > Because as stated in the Brutefir docs, you must have the same number of > > > JACK inputs & outputs otherwise an error is produced. > > > > Just try to use jackd in Playback-only mode and you will see that this is > > wrong. I have a soundcard here where I have a stereo-in and a 6-channel out > > and jackd works well with this... > > I suppose, Mark is talking about BruteFIR here. It might well be, that Brutefir > does not allow to specify different BruteFIR playback and capture channel > counts. I never used BruteFIR, but it's the same with Pd, which does not > allow this. (It does allow capture- or playback-only.) > > All this does not affect Jack itself, of course.