I’ve been importing files from iTunes, and re-burning many mobile fidelity disks in AIFF format so that they could be played in Room. However, almost all of the newly burned AIFF recordings in Roon now have jitter, but they sound fine in iTunes. Once the jitter starts, I have to close Roon to make it go away. I’ve now deleted the AIFF albums and gone back to ALAC, which doesn’t sound as nice.
My system is Mac Mini (1TB hard drive, iTunes and Amarra) to PS Audio DAC, to a LINN system (Linn Classik DVD/pre-amp, LK 85s, driving active Ninkas).