Hi Mario,
But it is a good starting point and provides some more features like mp3 and ogg vorbis support, though the former will be surely removed from linux distributions like fedora, so we end to the same point.
Big problem with mp3 is license - if you add mp3 support to your product, you have to ask user to accept separate agreement (during installation). I believe jdk7 will have ogg support, but it will be implemented in different package (not JavaSound) and JavaSound will have FormatConversionProvider bridge to the codec.
Regards Alex