Thanks for all yorr help with this. I am going to park MediaTomb for a while but...
Mmmm. TRACK_NUMBER == NULL for all records in mt_cds_object. So my import didn't...
OK. I now have a capture between 192.168.0.11 (Smartplayer on my phone) and 192.168.0.4...
Wireshark packet capture and text rendering of XML (from frame 19) available here...
I'm running mediatomb 0.12.2 on Xubuntu 16.04.1. When I view an album from the Web...