I have been working for a week or so on getting GNU Radio going on a Debian Linux platform running inside a VM.
GNU Radio is compiled and runs fine. The VM sees my Funcube Pro+ dongle. Using 'plughw:0,0' got rid of the audio stuttering problem. After struggling with a couple of the demo flowgraphs I downloaded and built gqrx.
It runs. I can tune it to the local NOAA Weather Radio transmitter. I use that for testing because its very strong where I am. I have the same problem there that I have in GNU Radio: no receive audio.