Hi Dan
BTW, thanks for your help!
i tried enabling the sound on the PSS application on my iMac and the live sound works as does the recoded playback.
i don't have speakers on the NVR. I will add speakers to it and work on this tomorrow so I can see if there is audio on the .dav file
i am using an app called iDealshare Go to convert the .dav video to HD QuickTime video which is a .mov file.
There are a number of other choices.
Am I converting it the wrong codec possibly and losing the audio track?