Hey I found a user that has the same problem, and a person into a jacklab forum answer this (i changed it to be compatible with musix) from: http://forum.jacklab.net/viewtopic.php?f=4&p=3256 "Make sure your user id is added to the "audio" group. Enter the following commands in a terminal. cd /etc/udev/rules.d/ ls Look for a file such as "020_permissions.rules" Some flavors of linux call it something slightly different. . . enter the following command to edit the file sudo kwrite 020_permissions.rules look for the following line KERNEL=="raw1394" change the following GROUP="disk" to GROUP="audio" Reboot your computer. Sign back on. Connect your firewire. . . open a terminal and type jackd -R -v -d freebob open an ardour session, create a bunch of audio tracks (you can edit the connections in input (edit)). . . They should automagically connect to your basic input channels. This command is useful: File: /usr/local/bin/stopjack #!/bin/sh killall -q -v startjack killall -q -v oss2jack killall -q -v jackd type in cd /usr/local/bin/ sudo gedit stopjack (enter the above lines, save and exit) You can open another terminal and enter sudo stopjack This kills all the jack server processes in case something hangs. . . The kernel processes can become corrupted to the point where you need to reboot occasionally. . . Check out http://gentoo-wiki.com/HOWTO_oss2jack I'll open two terminal windows: One to run the jackd service jackd -R -v -d freebob and one to snoop around and kill processes. . ." There is some other user using debian http://forums.debian.net/viewtopic.php?p=131505&sid=fc319485a48d1819fd4fe54f... If the problem persists, please subscribe to https://lists.sourceforge.net/lists/listinfo/jackit-devel and post there, and then please tell us how did you solved it, thanks