I finished my SoftRock-40 and it worked first time on Windows with SDRadio. Thanks!
I tried installing jDttsp and its many pre-reqs (python-2.4, jack, GNU SDL-1.6) on FC3 but I couldn't find any documentation on their site about what it does or how it does it, or even what keys to press, but it did appear to start up.
So I tried SDRadio under WINE and it ran. I had to kick ALSA by clickign on the volume control buttons a few times in the mixer (for some reason this seems to happen after reboots).
The bottom part of the buttons and the right edge are cut off, but at least it receives CW!
I'm using a Griffin iMic as the sound device. If you have a laptop with mono sound, you might try one of these. They're cheap and will get you up and running.
73,
Leigh / WA5ZNU
Leigh L Klotz, Jr.