[PROBLEM] MPD does'nt read Multi tag on DSF DSD etc.. files

[El bubar]

@El bubar 

By multi tag I assume you mean a tag with multiple values, for example genre = rock, emo or some such

Metadata in FLAC files is stored in Vorbis Comment blocks which explicitly support multiple instances of tag types such as  genre or artist, each containing an individual value. MPD's decoders handle this fine.

Metadata in DSD files is typically stored in an ID3v2 container which legally can have only one instance of any given tag type. As you can find by reading other threads in this forum about MP3 files, which also use ID3v2 containers, MPD has problems with multi-valued tags in either ID3v2.3 and ID3v2.4. There's a work around for ID3v2.3 which isn't legal according to the spec but which seems to work. OTOH, MPD's decoders find only the first value in a legal ID3v2.4 multi-valued tag. See the thread beginning at Tags: multiple genres.

Regards,
Kent

Hi @TheOldPresbyope thank for your help. very clear. 
I think I'll convert my DSF and other DSD files to FLAC format for now :-)  A bientôt Yann