Timo Sivula wrote: > Now both my ~/.asoundrc and /etc/asound.conf look like follows: You need only one of them. > pcm.multi { > ... > > /usr/bin/jackstart -R -dalsa -dmulti -r47040 -p64 -n5 -S -i2 -o2 > creating alsa driver ... > multi|multi|64|5|47040|2|2|nomon|swmeter|-|16bit > ALSA lib pcm.c:1972:(snd_pcm_open_noupdate) Unknown PCM multi Does the definition show up in the output of "aplay -L"? Regards, Clemens