I have over 400 CDs and SACDs in my collection, from the 80s to the oughts. Have ripped them to my Roon server connect to a Qnap NAS with now over 30 TB storage, as Flac or DSF files. For those CDs that have over the years degraded and can't be ripped, I wrote a scrapping agent for an (in)famous Russian Music Archive site and have > 1M magnet links stored on a MariaDB instance running on the Qnap. I only download albums/tracks as backups, for those I have paid for, via Put.IO
My Marantz Amp is Roon Ready and the Roon App (both the desktop and the iPhone version) is pretty good and sound quality is amazing as the App streams the files bit perfect without any downmixing, via ethernet.
Roon unfortunately doesn't handle DVD-A and DTS formats properly. I use Plex server and Infuse running on the Apple TV for those, and they work well. (Yes, I know I can convert .dts files to multi-channel FLACs using ffmpeg, but too many files, and I have not gotten around building an automated conversion workflow)
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