Music playback issues on Android

Hi, I'm a first time poster but have been using Serviio and ServiiGo for a while.
I've been having problems with streaming music (FLAC) to my Android device (Nexus 5X). Half the time I can't get tracks to play, they don't respond to my input. I press play but nothing happens, so it becomes trial and error. On a related subject, some songs cannot be played at all because of an "unknown error". Any help would be appreciated, thanks.
I've been having problems with streaming music (FLAC) to my Android device (Nexus 5X). Half the time I can't get tracks to play, they don't respond to my input. I press play but nothing happens, so it becomes trial and error. On a related subject, some songs cannot be played at all because of an "unknown error". Any help would be appreciated, thanks.