Added a JUnit test for the new Trie that fails at present since the Trie is
case-insensitive. Running JUnit tests is not something our build system
knows about at present, but Eclipse 2.0 makes it very easy.
Fixed a few compiler errors due to imports I'd forgotten.
Smart*Player.java, which are accessed via reflection. Cleaned up the
code a bit so that it would compile in so doing.
Changed the 'options.txt' preferences file to reflect the new method
of selecting media players.
