Hi Peter,
For a soundcard I use whatever resides / came stock within my machine. I use USB out to either a USB DAC (City Pulse or mhdt Constantine) or to a HagUSB and then S/PDIF from there into a regular DAC (various but at this moment Cal Labs Sigma II). I change DAC's quite a bit and the DAC doesn't seem to have an effect either way. I spoke too soon on my earlier post as well. XX did not play through the rest of the album but skipped anther song (maybe the 7th). Sometimes I do get an error message WP Change (I think) has stopped working. What happens then is the song starts to play through silently, then the WP Change message comes up and when I close that, another error message comes up, XX.exec has stopped working. Then when I close that error message its full stop and I have to press play again. The player then starts on the song it was on when the first error message occurred. This doesn't happen nearly as often as the silent playing through of some songs though.
Mike