Get an ATV4K with Infuse 6 or VLC connect to your HD621, done.
(CIFS or NFS mount of PC directory)

Handles everything, VLC can also do multichannel FLAC.

Last edited by Crion; 2020-09-03 08:46.
DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.