[LAU] Soundproblems on Ubuntu

I've some soundproblems on Ubuntu hardy. How does it work with the midi driver in qjackctl setup? When I choose seq and start jack, my system freezes... Should i install something or put something in my /etc/modules? When I start Rosegarden 7.2, my system freezes ('can t make connection device (can t read the message very well)) and yes qjackctl is running when I start it. When I start audacious: $ audacious Failed to load plugin (/usr/lib/audacious/Input/amidi-plug.so): /usr/lib/audacious/Input/amidi-plug.so: undefined symbol: audacious_drct_get_playing Exaille, totem vlc etc works ok. When gdm show up, I hear a beep, no ubuntu-tune after login... Real time kernel in hardy Maudio audiophile 24/96 pci Thanks in advance, \r