Thanks. Library not that big, but in my Meridian system I don't currently have another NAS or USB drive. So, sounds like Roon won't support MD600 library directly, and you still have to migrate data to another drive.

Seems a shame to abandon the MD600, but I may have to if M stops Sooloos development.

Studio System: UltraDAC, Analog Speakers, QNAP IS-453S Pro
Theater: Trinnov, 8kSPE, 4 5.2kSE, 7.2HCSE, Analog subs, DSP8000SEs
Roon (running headless on QNAP)