Blue Iris 3 used to record sound on my motion-detection video clips. Sometime in the last 2 weeks, it stopped doing so, for all 4 cameras. I have made no changes to the BI software. There were two automatic Windows updates that were installed on my hardware in the last week. Could that have caused the problem somehow? Anything I can try before I try "going back" to an earlier time on the computer? I've already tried basics such as restarting; reviewing all the BI options; ensuring speakers are on and working, etc.