Official Mumble VoIP Forums

Mumble glitch.

It crashed, it is bugged, ...
When I launch mumble I can only hear the mumble the chat, it's not that the chat is too loud. Please, if you have the answer tell me. I've had this problem for month's. (Also don't tell me to google it, I've done that around fifty times.
Do you mean you only hear the Text-to-speech?

The operating system controls that, including the volume, IIRC.