Product converts music between 5 major audio formats: AAC, MP3, WMA, OGG and WAV. Has clean, rich,CD audio quality results,smaller file size,very fast encoding. AAC Mp4 format,supported by AACoder Plus is used by major products like iPod and iTunes. AACoder Plus provides an easy and completed way to convert between most of the popular audio formats. With AACoder Plus users can batch convert music between 5 major audio formats: Wave, Mp3, Mp4 (AAC), WMA, Ogg Vorbis. Product supports AAC Mp4 file type - probable inheritor of Mp3 due to its crisp, rich, clean audio quality rivaling that of uncompressed CD audio. AAC also has much more efficient compression resulting in smaller file size and very fast encoding. AAC Mp4 audio format is supported by major hardware and software products like iPod and iTunes.