Quote from TunePocket Support on June 27, 2025, 2:47 pm

If you've ever added a music track in the YouTube Create app only to hear… nothing, you're not alone. Some high-quality WAV files may not play properly on mobile editors.

We recently helped a creator fix this exact issue by converting the file to MP3 and it worked perfectly.

Here's a quick blog post explaining why this happens and how to convert WAV to MP3 using Audacity (a free tool):

https://www.tunepocket.com/no-sound-in-youtube-create/

Hope this helps!