[App_rpt-users] IAXRPT windows desktop client no speaker audio

I just installed IAXRPT on a Win7 pro desktop computer. I can connect to my home node and can key it,and watch the audio speaker level fluctuate when I ask for *70 node status. But NO receive audio on the computer is heard on speaker or headphone jacks. In windows audio mixer I only have system sounds and Skype level sliders. No idea where IAXRPT speaker audio is supposed to come in. Any ideas? Thanks, Duane KA1LM