> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes. # applySelectedAudioOutputDevice > Apply the currently selected audio output device to an HTMLMediaElement (e.g. ```ts applySelectedAudioOutputDevice(element): Promise ``` Apply the currently selected audio output device to an HTMLMediaElement (e.g. the `