Make all OGG audio files loop seamlessly on Android music app

Hi there, We are looking to hire a contractor to overcome a development issue we are having with our musical application. Our app needs to play COMPRESSED audio back to the user (we are using .OGG files) which should loop seamlessly -- but they do not. We allow the user to play audio files back at different speeds; we've noticed that certain speeds have varying delays between loops. Sometimes, it loops perfectly -- most of the time there is a gap, and sometimes that gap is worse than others. We are using OGG files at 44.1k sample rate. Many of the loops are only a few seconds long. All of the OGG files were created with Sample Manager on a Mac converted from WAV files and they are perfectly cut. When analyzing the OGG files in Audacity, they loop perfectly - there is no added silence. We will give you our broken audio player function and sample OGG files to look at. If you can repair it and get ALL audio files in the demo to loop seamlessly (verified visually using Audacity software - see attachment), you will be rewarded. Thanks!