The files will not play in Sooloos. They were fine when they were imported, so it must be down to disk corruption.

When I migrated to the QNAP I did a backup and restore rather than a native export in order to preserve the metadata. All of these files backed up and restored perfectly recently.

The native export for Roon is a different matter, perhaps because the export actually tries to tag the files it is a more robust test of corruption? I know they're corrupt since the native export tells me they are and can't export. I end up with a lot of albums with missing tracks.

I've tried copying many of the files from the library and doing a FLAC to FLAC conversion using XLD and they all give a "Fail to decode" error.

Sooloos, Roon, G series (with LPS upgrade), 800 series (with LPS upgrade), HD621, AC200, Prime and PS, DSPs old and new.

Purdeys, Moke, Leica, 'Blad. Only the best.