I solved the problem by setting the sample rates in Windows to the same value for input and output (48K). Hallelujah! Mark
Thank you all for helping me. I am new to Jamulus and no IT wiz. I can get on the server and see that the signal is getting through, but I am not receiving any sound back. I am using an ancient (in computer years) USB interface, the M-audio M-track. Jamulus seems to see it as a "sound card", but it is only used for the mic input. Does my guess that the driver is the culprit make sense, or do I need to look elsewhere? This might be my excuse to upgrade my interface! :) Mark Reppert