Sorry about this, and thanks for letting us know.
The latest release actually expands MPD support to Bryston, Volumio, Rune and MoOde devices, but it looks like we accidentally disabled MPD support for your SOtM device in the process. I’m assuming the SOtM exposes both an MPD and DLNA interface simultaneously, and probably tricked Glider into thinking it was a Chord Poly (which was previously the only MPD device we officially supported).
This should be an easy fix, but since we don’t have an SOtM device here to test with I’m hoping you can help us out by testing a beta build? Just send me a private message with your email and I’ll get you set up.