Since it will take some time before OGG Vorbis is widely available, if you meet OGG Vorbis files not playing problem, you might as well convert OGG Vorbis to MP3. WonderFox Free HD Video Converter Factory is a good free audio converter for the conversion. The software supports almost any video and audio file to 500+ digital formats, and devices conversion. Its interface is user-friendly and the operation is simple. Free download the free converter and see how to perform the conversion with it.