I can hear my bass through my computer speakers. If I crank the levels in revalver, with a flanger, I get flanged noise (a mid frequency tone actually) So, bass input to 'puter works, and Revalver output works. There's just no effect on my bass signal. Details: bass behringer BDI21 DI line-in2/mic-in2 on front panel of Creative SB Audigy platinum. Running KX drivers XP pro I'll try the mic input, directly on the SB card, when I find, or make a cable.