Sorry you had a faff with getting to try it and also the results for you ended up being worse than your other configuration.
I found the intstallation straight forward (took about 15 minutes to install the Nanosound plug-in) and the process of playing the media again straight forward.
The sound I was hearing was also very similar to the ripped flac I had made of the cd I played, with no issues with the replay (worked from the first track to the last with no issues)
Wonder if the CD/DVD drive was the culprit? (and your aversion to Volumio............)
Main system:
Analogue.
Michell Orbe with arm decoupling kit & Pete's Pylons. SME V arm, Denon DL103M (FGS), Firebottle OPT MKII phono amp
Technic SP-10 in Obsidian plinth, AT1010 PMAC v8b arm, Goldring Elite MC Cart and BB3 Phono Amp
Leak Lenco GL75 with Ortofon OM10 cartridge
Technics RS-BX404 Cassette Deck
Network Player.
Raspberry PI plus R2-R DAC (also used as a CD player) plus Pi NAS Server
Digital.
Philips DCC 730 player
Marantz CD50SE
Amp.
Audiolab 8000A
Speakers.
Reiver Jenna floor standers
HeadPhones.
Sennheiser HD545 Ref, HD600, HD477