Before getting my hands all dirty with adding UHD driver to Quisk, I decided to take it for a test drive using some pre-recorded samples. I have used a 250 ksps recording of the HO-68 / XW-1 linear transponder downlink that I have recorded on November 9, 2010 using the USRP and the RFX400 daughterboard.
The player is a simple GNU Radio companion script that filters and downsamples the spectrum to 48 ksps, which is then sent to the computer running Quisk using an audio link. The two audio channels are used for I and Q respectively to keep the 48 kHz bandwidth.