GET THE AUDIO RIGHT! :(
If your menus audio is on one channel - then it must ALL be on one channel.

If it's on two channels then it must ALL be on two channels.

The way to check your 'assets' - and worth doing it periodically - is to arrange them by 'type' then step through them in the assets list while checking each property sheet. Make sure they match or the system crashes can be quite spectacular!
VERSION: N/A MENUS
SOURCE: Freely