I’ve seen similar posts with this issue, but cannot find a resolution to mine.
I have iTunes library stored on desktop PC, with the entire library synced to DS220+ NAS via Synology Drive. The synced folder on the NAS is what my Sonos app is synced to for my music library. All the songs appear as they should, and playback no problem. However, when I go to the Imported Playlists folder in the Sonos library to access my iTunes playlists, some of the songs show as the file name: “Artist - Title.mp3”, and won’t playback as Sonos app shows error message:
“Unable to play (Song file name/location), cannot be found”.
But the song appears and plays normal when going through the Artist folder and the file name doesn’t show with the .mp3 extension like it does in the playlist error.
This obviously appears to be some issue with the playlist file iTunes is generating, but I don’t know what it could be...since the playlists sync fine and some of the songs will appear/playback as normal, but som display the full file name with .mp3 extension and won’t playback at all. But ALL the songs can playback via Artist folder.