Ripping Reference Recordings HRX Discs

I'm trying to rip my HRX discs to my server for playback on the PS Audio PWD with Bridge. So far I've tried using dbPoweramp, J River, and just simply copying the files via Windows 7 to my server without any luck. dbPoweramp doesn't seem to recognize the files even though they are wav format. J River tries to rip them then goes eventually to a blank screen, and copying through Windows times out and nothing transfers. (If the files did copy, I can't find them.) Any help or insights would be great.