I think Koz has identified the problem : apart from the first ~10 seconds, the two channels are in anti-phase, (maybe you inverted one of them to create a wide stereo-effect).
That will sound OK on stereo headphones, but on devices with mono playback the anti-phase channels will cancel each other out , (destructive-interference), and all you will hear are compression-artifacts, which are a “severely distorted” version …