[Musix-users] no audio in rosegarden

All seems to work good now, midi ok, audio ok, etc. But when I try to record some audio (guitar say), the track remains empty. I searched all sorts of combinations in the mixer, but nothing work for this. I record easely in Ardour and Audacity, but not in Rosegarden. This is very annoying because I work with midi and audio together. I can't find what's wrong. I tried different "presets" found in the Rosegarden folder. When I boot, there is different error messages (oops, didn't note them precisely) like "bad sectors" (on CDs), "...failed as there no such -file or folder-" etc... Is my CD image damaged or is this bugs ? Rob