So far I've discovered I can go to http://whytheluckystiff.net/SPOOL/TRUMPETS for example to download a file. Trying to figure out how to read the format at the moment.
Looks like it is PCL format. I'm trying to find a decent Mac OS X program for converting PCL to image.
Managed to generate this: http://i.imgur.com/AL9mSLr.jpg The quality is horrible though. I see now that some other people have already linked rendered versions in high quality, though.
It was fun trying to figure it out though. :)