The plot thickens. I just downloaded the Mac version of dbpoweramp and attempted to rip 2 albums in FLAC. They haven’t shown up on the NAS (or on the SSD of the Mac)
One possibility is that I’ve not used the software correctly. The other is that the Mac is somehow blocking a FLAC file from finding it’s way to the NAS.
Recall in my OP that the original FLAC files on the NAS were transferred directly from the Bluesound Vault, which rips and stores in FLAC. The weird thing is that these files played back on the Mac
without having to be converted to another format