Correct.
I’m sorry I missed you mentioning the RasPi4. LibreElec doesn’t currently support this hardware in a stable manner, so that ‘PMP embedded’ was never updated to a newer version of LibreElec.
Since it was decided that PMP will only be kept running as-it is, currently I am not 100% sure that it will ever be ported to a newer version of LibreElec.
I can only recommend you to experiment with Kodi and either PlexKodiConnect or the “Plex for Kodi” AddOn.
(although it might very well be that Plex4Kodi doesn’t support MC music. It was a long time ago that I tested this.)
Right now, multi-channel music with a multi-format support is only possible with either the Windows or the Mac version of PMP, with the audio interface properly configured to ‘surround’.
I have successfully direct-played MC flac, dts, and ac3 with PMP.
DSD is not supported (it’s converted to ‘lossy’ stereo), nor is MLP (but this can be converted without loss to flac, prior to adding it).
