1)   Audio Encoder 2.158 Audio Encoder is a powerful audio converter which can convert among MP3, WAV, WMA, MP4, M4A, AAC, OGG, etc., such as convert M4A to MP3, convert MP4 to MP3. 2)   Xilisoft Video to Audio Converter 3.1.6 Xilisoft Video to Audio Converter is a versatile video to audio conversion tool which can convert MP4 to MP3, MPEG to MP3, OGG to MP3, support MP3 RM converting. It supports multithreading and batch conversion etc. Perfect and useful tool!