Why should we write audio file is not supported by browser?

Answer 1

In case the audio player isnt supported by the browser, then "the audio is not supported" will appear instead of the audio.

Answer 2

because not all browsers support the audio type

Answer 3

Because some browsers do not support audio element or even html5.

Answer 4

To respond to the browser in failing to play the audio

Answer 5

So people would know that they're browser did not support audio element rather complaining you with : "The audio is not playing. I think your audio file is broken."