While downloading the video template for After Effects, sound is not getting downloaded

Why is the Audio not getting downloaded, if not then how to find which audio is being used ?

Hello and welcome to Envato Forums!

Usually authors include link for music used in the preview. You could try to find that on the VideoHive item page. Just copy the item title, go to Videohive, paste it into the search bar and there check if author linked that music.