rendererId parameter of AudioEngine constructor does not work.

We’ve done a lot of work porting our old XNA Application to Monogame. Part of the application requires sound to be played on an audiodevice other than the main one. In our old application, we used the XACT tool to create Sound Banks, and used the AudioEngine to play them.
In Monogame, the rendererId parameter of the AudioEngine Constructor, does not seem to work. Audio just plays on the main audio device. We’ve checked the sources and indeed, the parameter is defined, but never used further in the constructor. Is there some other way to play audio on a different audio device than the main one?

Sources of AudioEngine: (see: Public AudioEngine(string settingsFile, TimeSpan lookAheadTime, string rendererId) {)