Hi!
The same FILE-name is due to the functionality of the Toniebox! It needs exactly that FILE-name (should be: 500304E0) on the SDcard to play the content! The FOLDER-name corresponds with parts of the UID of your “WILD TONIES” and is created at the beginning while generating new content.
So, if you use the same UID/tag/WILD TONIE to create content, TeddyBench will always create the same FOLDER-name
You might have a look into this post:
It’s a pretty nice guide to TeddyBench!