THANK YOU EVERYBODY.
I have solved the problem. Here's the solution for those of you with whetted minds...
Under the 'Control Panel', -> 'Audio Devices' -> 'Audio' -> 'Advanced Options' there is a slider to set the level of hardware acceleration for audio.
It was on 'full acceleration'. Changing this to 'standard acceleration' gets all Blitz sound working.
Again, thank you to everyone who responded, and without your help I definietely wouldn't have tracked down and eliminated the source of the incompatability so quickly.
Viva la audio!
I have solved the problem. Here's the solution for those of you with whetted minds...
Under the 'Control Panel', -> 'Audio Devices' -> 'Audio' -> 'Advanced Options' there is a slider to set the level of hardware acceleration for audio.
It was on 'full acceleration'. Changing this to 'standard acceleration' gets all Blitz sound working.
Again, thank you to everyone who responded, and without your help I definietely wouldn't have tracked down and eliminated the source of the incompatability so quickly.
Viva la audio!