Muting an embedded vimeo video

Question

On a website I am building I have a vimeo video embedded. The client needs to keep the sound on the video obviously for people that find it on vimeo. However for her website

Answer 1

In case it helps anyone, Vimeo have added a 'background' parameter for embedding videos, that autoplays videos silently. In some cases that will be useful where people want to mute videos - this is their example: