Sound System autodetect?

Hi all, here is the next problem I had, when setting up my amd64-computer: The Sound System: I had sound with xine but NOT with Juk... After a bit looking around, I found out that Juk is a KDE application and xine (although used via Kaffeine) seems not to be... When I checked Preferences -> Sound & Multimedia -> Sound System -> Tab: Hardware, the "Select the audio device" was on "Autodetect" but only worked when on "Advanced Linux Sound Architecture"... Why is this not switched on default or why is it not autodetected correctly? Thanx for your comments. Gery