Question / Help Replay Buffer - No Sound?

[Hue]

Hi there,
I am using the buffer in a homemade replay system. Works great, thanks for getting it into Advanced mode.
I noticed today though that the replay recordings do not have any sound. I looked through all the settings but there seems to be little config w/respect to sound on the buffer.

Anyone know where my brain fart might be?

 

[Suslik V]

The audio settings for replays same as for recordings.

 

[Hue]

..and 5 mins later I fix it, I changed my audio to stereo from mono and selected the specific output device rather than "default" and we are back in business.