As it stands, when making routing rules for Mozilla 57.0 and above it seems that the application doesn't get routed to the appropriate endpoint.
Other routing applications such as Audio Router and CheVolume have no problem routing the audio to the needed endpoint.
From observing these applications it seems that Mozilla Quantum has individual audio streams for individual tabs. This aspect of the new mozilla might contribute to this problem.
As it stands, when making routing rules for Mozilla 57.0 and above it seems that the application doesn't get routed to the appropriate endpoint.
Other routing applications such as Audio Router and CheVolume have no problem routing the audio to the needed endpoint.
From observing these applications it seems that Mozilla Quantum has individual audio streams for individual tabs. This aspect of the new mozilla might contribute to this problem.