Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/LeftHandedFiddler.abc/500"

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Coll_73979.log 475696 Log file, useful mostly for debugging
Tune-73979-500.abc 153 ABC music file with the extracted tune(s)
Tune-73979-500.txt 153 Plain-text file with the extracted tune(s)
Tune-73979-get.log 11538 Log file, useful mostly for debugging
These files should be available for 24 hours.