Question: How can I encode to mp3

How can I encode to mp3?  Maple's AudioTools package only includes WAV file formats.  I would think by now Maple 15 would have included the mp3 format seeing that it is so standard. 

None-the-less, I feebly started to embark on what I thought would be a quick two step process - 1 - find the mathematics involved and 2 - code in Maple.  My searches brought me to some good information at www.mp3-tech.org  ... my eyes glazed over at the docs and amount of info to read and decrypt, and then the task became quite a daunting prospect. 

It would be interesting to see in a tutorial type document and see how it's done in Maple.  Build a simple signal with Maple, convert it to an audio Array then encode it and Write the file as mp3 from the AudioTools package. 

Can anyone provide an example?