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The only "dumb" question is the one you're too proud to ask -- when you need the answer!
Sorry I'm late, but just click on the video clip -- so that the "control icons" ("Play", etc...) appear across the bottom.
One of them will probably be a "speaker" icon, with a small "x" to its right. Click on the x or the icon, and the x should change into a pair of "sound wave arcs" -- and the sound should turn on.
(Just make sure your device's sound is turned on & the volume is up, first...)
Good luck!!
TXnMA
