by Ken Task.
Those 'bad joke' xml files contain information the prof might find useful.
There is a moodle_backup.xml that contains information concerning the Moodle version from which the course comes and other useful? technical info.
Example:<moodle_version>2012062504.06</moodle_version>
<moodle_release>2.3.4+ (Build: 20130214)</moodle_release>
<backup_version>2012062500</backup_version>
<backup_release>2.3</backup_release>
That info could be a factor in Prof's endeavors to install the local Moodle app on "PC" which am assuming means Windows.
https://download.moodle.org/windows/
Advice ... don't pick the dev version ... might select from the listing of available downloads the one closest to the information seen in moodle_bacup.xml.
If one is successful in installing, operator will then have full access to all the content of the course ... files, question banks, etc. *IF* those resoures used 'stock' Moodle mods/blocks/etc.
Any 'special' - 3rd party - addon, such as TurnItIn, will not function on the local host.
There's an alternative to locally installed on PC ... depending upon size of the backup course .. one might be able to acquire an account on Moodle Cloud ...
https://moodle.com/cloud/
and restore the course there.
There might be limitations as to size of file that can be uploaded upon restoring, however.
'spirit of sharing', Ken