How to set sound device used by Firefox?

I'm using SuSE9.3, and have 2 sound cards setup... /dev/dsp is the default card (Soundblaster 7.1) and /dev/dsp1 is the secondary card (onboard AC'97). Both sound cards are setup properlky and work fine. The secondary card is dedicated to my Skype headset. The primary card is set to be used by all other applications. This setup is working fine... except for one application... Firefox. When I am on any webpage that has sound, it is always played through /dev/dsp1 - the headset, not the main speakers. So... that's the problem.... anyone know how to fix this so that Firefox uses the primary sound card (/dev/dsp) instead of the secondary sound card (/dev/dsp1)? C.