When trying to use an audio file such as [[File:Four Inventions.ogg]] from the foreignAPIRepo (Commons specifically), in my own installation of MediaWiki, the following error is produced:
[client ::1] PHP Warning: file_put_contents(/Users/hartman/Development/phase3/images/thumb/Accordian_chords-01.ogg/): failed to open stream: Is a directory in /Users/hartman/Development/phase3/includes/filerepo/ForeignAPIRepo.php on line 210, referer: http://localhost/wiki/index.php?title=Main_Page&action=edit
A thumb reports: "Error creating thumbnail:", while a noicon inclusion simply creates a redlink.
Version: unspecified
Severity: normal