how to make a file like audio or video downloadable

Question

html

Answer 1

Simply add an attribute download in the anchor tag.
<a href="song.mp3" download>download song</a>

Answer 2

html 5

Answer 3

you can use tag video
< video control Width=50px height=50px
source src="My.mp3">
</video>
auto dawnlod with video in computer
( Google Chrome) browser