While it is possible, thanks to this guide: Custom Video Embedding: Youtube, Vimeo, or hosted video files | Stopping Audio when exiting the scene
I can’t find a way to silence the HTML widget inside Hype:
https://dl.dropboxusercontent.com/u/67104790/video_capturas/hype_bugs/never_ending_audio.mp4
Is there even a way to do it? Its driving me crazy.
Hype’s editor is a live web view (to keep it as WYSIWYG) as much as possible; this unfortunately means that some content will also run. My recommendation is to save on a scene not containing this audio and then close and reopen the document and don’t show that scene. If the audio isn’t autoplayed, you could also control-click on the HTML widget and choose ‘Reload HTML Content’ and that might also cause a refresh.