Gaps Between Tracks

[simoncn]

In all these logs I see a long delay (5 to 8 seconds) between MinimServer finishing sending the first track and starting to send the second track. As you are not hearing long gaps, this suggests the streamer (or perhaps BubbleUPnP Server) is doing a lot of buffering.

For "reliable" gapless streaming, the renderer would normally start to stream the second track shortly before the first track has finished streaming.

I don't think you said what device(s) you are using to run MinimServer and BubbleUPnP Server. If these devices are busy with other activity, this could cause gaps between tracks (given that the gapless streaming protocol being used is not "reliable"). The reboot presumably cleared this condition.