Best Audio Encoder for Java???

In my program, I can only play .au files in Java.. I have a few .wavs that I would like to incorporate into my program, but I need to change them into .au . Ive tried using COOL EDIT PRO 2 and SOUND FORGE 6.0 to open up the .wavs, then save them as .au .. I run my Java program, but an error comes up saying INVALID ENCODING and INVALID FILE TYPE.. Does anyone have a solution for this frustrating problem I have? It's very urgent and I need your help, thanks...

It took me 4 clicks and 12 keystrokes to find this.
http://java.sun.com/docs/books/tutorial/sound/problems.html
I clicked Tutorials
I clicked The Java Tutorial
I clicked in the Tutorial Search textField
I typed sound files <enter>
The first one looked good to me, click!
Live and learn,
Radish21

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