Multiple audio devices issue

Hi, am using knoppix 5.0, loving what I see so far, but on my comp Ive got two audio devices, one audigy and one onboard, with knoppix I can't set a default one. Would like it to be the audigy, which plays fine with xine, but for audio non of the other programs use the audigy, it is a hassle to switch the wires everytime.

Ive been using Kmix and the sound system in the kde control center to set it to the audigy, but to no avail if anyone could be of help, it would be much appreciated.

Many thanks.