Does K3B automatically truncate file names?
 

When I hit burn, K3B often warns that some file names are longer than 64 characters and something called Joilet doesn't liket that. If I click OKAY to proceed, does K3B go around and find 64+ character file names, shortening them automatically? Or does it burn those names as they are to the disk?...which would (I am assuming) cause some problems somewhere...otherwise there wouldn't be a warning about this.

Yes, K3b would automatically truncate the filenames that are longer than 64 characters. This is not a problem as all files will still be readable.

joliet is an iso9660 file system extension that allows long filenames, up to 64 Unicode characters in length since the original specification only did the DOS 8.3 format. Yes, since you said ok k3b will shorten all file names if over 64 characters.