Might be simpler than you'd think. Youtube has its own persistent volume control. I saw this when mine got turned down by something. Dan > On Tue, Jan 6, 2015 at 3:57 PM, Shel Horowitz <shel at principledprofit.com> > wrote: > >> On my laptop (MacBook Pro, OSx 10.9.5, recently added more memory but the >> problem preceded it), in at least two different browsers, every Youtube >> video I've loaded since the memory upgrade plays silently. >> >> On my desktop computer running 10.5.8, it tells me my flash is obsolete >> but allows me to "run this time" and it plays fine. >> >> Before the memory upgrade, I was having this problem on some but I don't >> think all Youtube videos, and I may have had the problem with other >> videos--not sure. Since the upgrade, I have only encountered this bug on >> Youtube. >> >> Any idea what's causing and how to fix? >>