Controller
Using BubbleUPnP Android phone app as controller to select server and player.
Server
When the LMS UPnP/DLNA Media Interface plugin is enabled, it will make LMS appear as a UPnP server. It will appear as a server on the phone.
Player
Was intending to use upmpdcli as the player, hence the original post.
However, can use the players from the LMS UPnP/DLNA Bridge plugin. When enabled, the Bridge plugin will look for UPnP players and provides a list of players. This list can be enabled or disabled by the user. The player is visible on the phone, even if the plugin is not active! Potentially, can have duplicate entries if upmpdcli is enabled seperately.