Datman,
Unfortunately I don't have any insight into the issue, but wondered whether you set up, or know if you can set up a media player to run directly on your NAS (foobar, monkey media, etc) to read the flac files and output a digital stream directly to a DAC. If so can you explain what I need to look for in a NAS as far as processor, operating system, etc. Thanks and good luck with the file transfer and consolidation.