Thanks @mhilbush here is the output:
2019-03-09 17:42:02.131 [DEBUG] [eezebox.internal.SqueezeBoxAudioSink] - Processing audioStream http://172.17.0.9:8080/audio/d7bbb08e-ad2f-4c38-8476-50d0b21de3ac.mp3 of format AudioFormat [codec=MP3, container=NONE, ]
2019-03-09 17:42:02.132 [DEBUG] [rnal.handler.SqueezeBoxPlayerHandler] - Play notification sound on player b8:27:eb:56:4b:f4 at URI http://172.17.0.9:8080/audio/d7bbb08e-ad2f-4c38-8476-50d0b21de3ac.mp3
2019-03-09 17:42:02.132 [DEBUG] [ternal.handler.SqueezeBoxPlayerState] - Cur State: vol=20, mut=NOT MUTED, pwr=ON, stp=STOPPED, ctl=PAUSED, shf=OFF, rpt=OFF, tix=0, tnm=0, tim=0
2019-03-09 17:42:02.133 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Setting up player for notification
2019-03-09 17:42:02.133 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 mixer volume 27
2019-03-09 17:42:02.240 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Adding notification message to playlist
2019-03-09 17:42:02.241 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 playlist add http://172.17.0.9:8080/audio/d7bbb08e-ad2f-4c38-8476-50d0b21de3ac.mp3 Notification
2019-03-09 17:42:02.751 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Playlist updated
2019-03-09 17:42:02.752 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Playing notification
2019-03-09 17:42:02.753 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 playlist index 0
2019-03-09 17:42:12.925 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Restoring player state
2019-03-09 17:42:12.926 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 mixer volume 0
2019-03-09 17:42:12.927 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Removing notification message from playlist
2019-03-09 17:42:12.929 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 playlist delete 0
2019-03-09 17:42:13.334 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Playlist updated
2019-03-09 17:42:13.335 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 playlist index 0
2019-03-09 17:42:13.336 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 time 0
2019-03-09 17:42:13.337 [DEBUG] [handler.SqueezeBoxNotificationPlayer] - Stopping the player
2019-03-09 17:42:13.339 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 stop
2019-03-09 17:42:13.340 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: b8:27:eb:56:4b:f4 mixer volume 20
2019-03-09 17:42:27.734 [DEBUG] [rnal.handler.SqueezeBoxServerHandler] - Sending command: players 0
2019-03-09 17:42:35.373 [DEBUG] [rnal.handler.SqueezeBoxPlayerHandler] - Trying to download the content of URL http://192.168.1.25:9000/music/current/cover.jpg?player=b8%3A27%3Aeb%3A56%3A4b%3Af4
I’m not sure how squeezeserver works, but I think it is getting a link to a playlist to play, right?
The the problem is probably related to Docker.
The IP 172.17.0.9 is the internal docker container IP. My home network is on 192.168.1.x. So I guess it cannot access that file. If I test fetching it it doesn’t work, if I substitute the IP in that URL with my openhab IP, I can open the file.
Is there any way to handle this?