I installed MPD with the simple task of playing a local MP3 on my RPi with HA. This turned out not to be simple. MPD plays anything over a public IP address stream such as radio, but no local audio files. I get the error message that it couldn’t decode and also HTTP 403, forbidden. Anyone have any idea as to what could be causing this?
Post the logs.
This may be related, just a guess without seeing your YAML.: Collecting and Sharing Media Files