I have tracks that play fine on the desktop but have issues with your iOS app on the iPhone and iPad. The tracks are in a playlist and the playlist just stops at those tracks. I have seen it play after about 5 minutes or not at all. I am on wi-fi with a broadband internet connection. Also selecting the tracks manually shows the same result. I've seen this behavior on two tracks...
Aretha Franklin with Larry Graham – If You Need My Love Tonight
Jimmy Fallon – Balls In Your Mouth - feat. Eddie Vedder
The console log shows these errors...
Jul 21 10:10:18 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:10:18.964 E [ap:4172] ChannelError(0, 1, streams)
Jul 21 10:10:18 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:10:18.964 E [file_streamer_simple.cpp:686] handleApErrorCode. Error 106. Timeout: 500
>
Jul 21 10:10:31 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:10:31.871 E [ap:4172] ChannelError(0, 1, streams)
Jul 21 10:10:31 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:10:31.871 E [file_streamer_simple.cpp:686] handleApErrorCode. Error 106. Timeout: 1000
>
Jul 21 10:10:45 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:10:45.179 E [ap:4172] ChannelError(0, 1, streams)
>
Jul 21 10:10:48 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:10:48.664 E [ap:4172] ChannelError(1, 1, streams)
Jul 21 10:10:48 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:10:48.664 E [file_streamer_simple.cpp:686] handleApErrorCode. Error 106. Timeout: 500
> >
Jul 21 10:11:01 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:01.295 E [ap:4172] ChannelError(0, 1, streams)
Jul 21 10:11:01 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:01.295 E [file_streamer_simple.cpp:686] handleApErrorCode. Error 106. Timeout: 1000
>
Jul 21 10:11:14 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:14.568 E [ap:4172] ChannelError(0, 1, streams)
Jul 21 10:11:14 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:14.569 E [file_streamer_simple.cpp:686] handleApErrorCode. Error 106. Timeout: 2000
>
Jul 21 10:11:28 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:28.802 E [ap:4172] ChannelError(0, 1, streams)
Jul 21 10:11:28 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:28.802 E [file_streamer_simple.cpp:686] handleApErrorCode. Error 106. Timeout: 4000
>
Jul 21 10:11:44 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:44.950 E [ap:4172] ChannelError(0, 1, streams)
Jul 21 10:11:44 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:11:44.950 E [file_streamer_simple.cpp:686] handleApErrorCode. Error 106. Timeout: 8000
>
Jul 21 10:12:05 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:12:05.257 E [ap:4172] ChannelError(0, 1, streams)
Jul 21 10:12:05 unknown SpotQueue[1147] <Warning>: MessageFromSpotify: 14:12:05.257 E [file_streamer_simple.cpp:677] handleApErrorCode. Fatal Error 106