Multiple Java errors caused by this tool

[Ghosty]

I attempted to make a piano tool, just to see if it was now possible. It turns out it isn't quite so. Not only is there a far-too-long delay between pressing the key and hearing the sound, but two long errors are constantly popping up in the output when I use it.

.wmodel files are not allowed as attachments, and it appears that saving models to the website is unfinished, so I've uploaded the tool to Mediafire: http://www.mediafire.com/?44idj21hj0k2bsk