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Dual play soundtrack of youtube video

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On my website frigilianarentals.com I have an embedded YouTube video. On Firefox the video soundtrack plays twice, concurrently. This doesn't happen on chrome not edge, so as Firefox is a popular, understandably, browser, I really need to stop this happening.

Any thoughts?

On my website frigilianarentals.com I have an embedded YouTube video. On Firefox the video soundtrack plays twice, concurrently. This doesn't happen on chrome not edge, so as Firefox is a popular, understandably, browser, I really need to stop this happening. Any thoughts?

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Hi

I am going to lock this question as it appears to be a duplicate of:

https://support.mozilla.org/en-US/questions/1239056