I've repeated my LMS tests after 2.1.13 bridge update. FLAC and WAV files work fine, but OGG and MP3 ones are broken - no advance to the next track.
Instead of a chain of actions similar to this
[10:37:08.023645] AVTSetNextURI:99 [0x69d3c0]: uPNP setNextURI
http://192.168.0.26:34579/bridge-18.flac (cookie 0x4adc)
(...)
[10:37:13.062902] handle_http:484 [0x6138e0]: received GET /bridge-18.flac HTTP/1.1
(LMS sets the next song 5 seconds before the current one ends)
I can see this
[10:39:46.026219] AVTSetNextURI:99 [0x69d3c0]: uPNP setNextURI
http://192.168.0.26:46492/bridge-21.ogg (cookie 0x4cbe)
(...)
[10:40:05.186662] AVTBasic:188 [0x69d3c0]: uPNP Next (cookie 0x4cfa)
[10:40:05.186864] _SyncNotifState:642 [0x69d3c0]: guessing missed nextURI (null)
and playback stops.