Still loving my HTC One
Found this app suggested on a forum somewhere and gave it a whirl to see if I could get the speakers down quiet for night-time listening - works really well but you sometimes need to flick the ON/OFF buttons in the app a couple of times:
In other news - had a play with the action sequence/Events feature of the camera... WOW! Basically, go to GALLERY>MY PHOTOS then click the "Albums" dropdown top left and change to EVENTS. If you pick an EVENT photoset the first pic will be a mini-movie with sound etc - it's great and can be shared too!