Yes, Montage supports audio in two ways.
1. Voice and Video of connected attendees
Connected attendees using the Windows Application, Chrome web client, and iOS and Android applications can enable their camera, microphone and speakers to join the meeting from outside of the room.
2. System audio from a PC
The Montage Windows Application will by automatically share your system audio when you become the Active Display. If you enable your mic, the system audio will stop. If you enable your speakers, the audio will come out of the PC speakers and stop being shared with the Montage output.