"Fakin' The Funk" first calculates the MD5-Hash of the filecontent to check if there is already a calculated spectrum for it.
If so, it re-uses the already existing one. This will show the "wrong" filename, since it was computed from a different - but identical(!) - file.
The hash will uniquely identify the file by its content (filename does not matter!) and is much faster than recomputing the spectrum. That's the reason why it is done this way!
So it looks like you have simply downloaded the identical file from different sources!
If you want to enforce a recalculation, hit F5 when the spectrum is shown (or use the right-mouse-key)