upplay is a simple Qt-based UPnP/OpenHome audio Control Point, which works on Linux/Unix and Windows.
Upplay was started from the Sayonara local player, the UI of which was reused and pitilessly maimed.
It supports gapless transitions using either AVTransport setNextUri or OpenHome Playlist, depending on what the device supports (OpenHome is chosen if available).
See the manual
The player is less polished than the best Android/IOS/Mac/Windows ones, but can be useful if you are at your desk Linux PC with no decent control point around, at least to turn the music off…
I would very much like some help in improving the UI !
Please get in touch if you are interested: jf at dockes.org
See the doc here