Update: Setting jack to playback only mode re-sets the sampling rate to 48000, while duplex mode renders the following error message: ALSA: cannot set period size to 128 frames for capture ALSA: cannot configure capture channel Complete output: jackd 0.100.0 Copyright 2001-2005 Paul Davis and others. jackd comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK compiled with System V SHM support. loading driver .. apparent rate = 44100 creating alsa driver ... plughw:0|plughw:0|128|2|44100|2|2|nomon|swmeter|-|32bit control device hw:0 configuring for 44100Hz, period = 128 frames, buffer = 2 periods ALSA: cannot set period size to 128 frames for capture ALSA: cannot configure capture channel cannot load driver module alsa no message buffer overruns Carlo