I know a kind of sofeware what you're lookling for. Xilisoft audio converter supports converting between many popular audio formats, such as MP3, WAV, WMA, MP4, M4A, MP2, VQF, APE, OGG, AAC. What's more, it's very fast. U can trial it here:http://www.xilisoft.com/audio-converter.html hohohohoho))))))))))))))))))
I was not very impressed with xilisoft. dBPowerAMP is much better...and its free. a basic audio converter shouldn't cost $23. check out the link in my sig below for dBPowerAMP's website.