In transitioning from Centos 5.3 to Fedora 11, my rdesktop setup stopped redirecting sound to the client. It emits the following 2 error messages:
/dev/dsp: No such file or directory
WARNING: no working audio-driver found
My assumption is that rdesktop is still using the /dev/dsp device, and F11 has apparently dropped that entirely as they have migrated to pulseaudio. I found a partial workaround is to invoke rdesktop via the "padsp" wrapper. But its not clear how to do this with tsclient (other than actually replacing rdesktop itself with a wrapper script or something messy and fragile).
Am I missing something subtle? Does rdesktop really require /dev/dsp, or is that just its first choice? In any event, I think the Ubuntu folks have done something to fix this problem. Any chance of getting it pulled upstream?