found this article and wanted to share with those who don't know about it..This fix was originally found by Redditor xStreame, and it was then expanded upon and reposted by pr01etar1at:
Open Google Now
Search for “OK Google everywhere”
Click any link [may be unnecessary but I did it]
Back out to Google Now
Go to Settings>Voice
Audio History and Anywhere Detection should now be available as settings.