Odd Problem in V10

[Warnevada]

My friend and I are playing a PBEM game in V10. On my turn the movement, not combat, sounds don't work right. Infantry sounds are very low as to be almost impossible to hear and tank moves are completely silent. But my friend says on his turn everything is normal.

On a game against the AI the same thing happens. On the previous version everything worked fine. I'm having no sound issues with anything else I'm doing.

Any idea what's going on?