The most common and effective way to convert OMA audio to MP3 is to use a specific desktop free audio converter. Among numerous counterparts, WonderFox Free HD Video Converter Factory is powerful enough to get the top spot. It supports all common video and audio files, and can also convert rare formats like OMA to MP3, WMA, M4A, OGG, AC3, WAV, FLAC, ALAC, etc. Besides being a video & audio converter, it enables to download videos from websites using URL, clip, crop, rotate, merge videos, and reduce video file size for storage. Next, I’ll show you how to do the conversion with this free OMA converter. Download the free converter software and let’s start!