Playlists blank

[orange55]

I have exported my playlists from iTunes in M3U format, example here:

#EXTM3U
#EXTINF:228,The Cure And The Cause (Ambient Mix) - Fish Go Deep Feat. Tracey K.
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-01 The Cure And The Cause (Ambient.m4a
#EXTINF:276,One Love - Sara Tavares
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-02 One Love.m4a
#EXTINF:281,Down But Up - Ganga
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-03 Down But Up.m4a
#EXTINF:284,Northwest - Aim
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-04 Northwest.m4a
#EXTINF:389,Intoxicated - Groovecatcher
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-05 Intoxicated.m4a
#EXTINF:394,Still Here - Aural Float
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-06 Still Here.m4a
#EXTINF:291,Give Me Lovin' (Mantra Mix) - Goloka
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-07 Give Me Lovin' (Mantra Mix).m4a
#EXTINF:287,Rain Down Love - Freemasons Feat. Siedah Garrett
M:\Music\Compilations\Hed Kandi_ Serve Chilled 2007\1-08 Rain Down Love.m4a

In MinimServer they appear blank which accessing from my Oppo 103 player and Oppo MediaControl iso app.

I am running MinimServer on Synology Diskstation DS213j.

They work perfectly when imported into Sonos, the same files in the same location on server.

Any idea on ow to fix this please?