Fitness App Simple Audio Bug Fix (Xcode)

Job ID: 32734233

Budget: $10 – $30 USD

I have a simple fitness app built with Xcode.

The app plays fitness videos, which are mp4's.

For some reason the mp4's won't play with sound.
I've confirmed that the video has sound when I play from the video link on my phone (ie: in a web browser)
But the video won't play with sound in the app.

I'm assuming it's a very simple fix.

I'll give a 10 rating for good work.