Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book40/BB50.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Tune-9620-BB50.abc 143 ABC music file with the extracted tune(s)
Tune-9620-BB50.txt 143 Plain-text file with the extracted tune(s)
Tune-9620-get.log 3051 Log file, useful mostly for debugging
Tune-96207-get.log 1420 Log file, useful mostly for debugging
Tune-96209-get.log 1329 Log file, useful mostly for debugging
These files should be available for 24 hours.