JMF Replacement

JMF has been replaced by the JLayer sound library, and the code used to play audio has been updated to reflect this. The mp3plugin codec dependency, no longer needed since we are not using JMF, has been removed from the project.

JLayer has several advantages: it is much more lightweight code wise (easier to read and implement), it is fast and efficient (benchmarks often use <1% of CPU on 1.5SE Java) and it doesn't need additional dependency management- it simply play's mp3 files.

If you wish to read up more on the JLayer project, and what it is and is not capable of, [here is the JLayer Website](http://www.javazoom.net/javalayer/javalayer.html)