ender@madfist:~/projects/jbmgen_java/jbmgen$ ./run.sh ./
Exception in thread "main" java.lang.NullPointerException
        at java.io.File.<init>(File.java:194)
        at Node.<init>(Node.java:20)
        at Tree.traverse(Tree.java:53)
        at Tree.<init>(Tree.java:18)
        at Index.<init>(Index.java:8)
        at Index.main(Index.java:30)
ender@madfist:~/projects/jbmgen_java/jbmgen$ ./run.sh ./01\ -\ Even\ Better\ Than\ the\ Real\ Thing.mp3 
Exception in thread "main" java.lang.NullPointerException
        at Tree.traverse(Tree.java:62)
        at Tree.<init>(Tree.java:18)
        at Index.<init>(Index.java:8)
        at Index.main(Index.java:30)
ender@madfist:~/projects/jbmgen_java/jbmgen$ mv ./01\ -\ Even\ Better\ Than\ the\ Real\ Thing.mp3 ./blah.mp3
ender@madfist:~/projects/jbmgen_java/jbmgen$ ./run.sh ./
Exception in thread "main" java.lang.NullPointerException
        at java.io.File.<init>(File.java:194)
        at Node.<init>(Node.java:20)
        at Tree.traverse(Tree.java:53)
        at Tree.<init>(Tree.java:18)
        at Index.<init>(Index.java:8)
        at Index.main(Index.java:30)
ender@madfist:~/projects/jbmgen_java/jbmgen$ ./run.sh ./blah.mp3 
./blah.mp3
Even Better Than the Real Thing