No sound in game since last update

Since the last update 1:41 I have no sound whilst in game…its not HDMI link as that comes through from websites ok , so must be a glitch in Zwift.
Any ideas anyone ?

The only known issue similar is that the title music has disappeared but the in game sounds are working.

Can you give more detail about your setup?

strangely i had noticed the opposite and thought that the in game sounds (background noise like birds and waterfalls etc) were much louder than i remembered