Multi-state button?

I would like to make two buttons:

Mute / Unmute: The button should mute any audio playing and show an icon of a mic with a line through it. When it is clicked and audio is muted, the button should have an icon of a mic on it and when clicked, turn the audio back on. Pause / Play: The button should pause the whole slide (auto-playing video also) and have a pause icon on it. When clicked, it should have a play icon and resume the slide (auto-playing video also).

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