I noticed that there isn't much filtering being done when files are approved in the archives, and as a result, plenty of files are located in the wrong section or are not assigned to a proper category. There are even duplicates :

In members programs, at the root directory:
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=744
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=746 (Duplicate)

TI-Nspire section
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=649
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=694
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=734
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=735
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=736
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=739
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=753
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=761
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=762
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=764 (Is that even allowed by the rules? Not to mention it uses a very outdated version of Mirage)

Music section:
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=755
http://www.omnimaga.org/index.php?action=downloads;sa=view;down=763 (should both be located at the exact same place as Yeong's songs)


For the forums, I solved the wrongly placed topics issue since as news editor I can move topics, but I cannot move files in the archives so...

Now that I think about it, I think to move music-related stuff you must edit the database X.x (due to the custom fields glitch)

It's Download System's fault. When you have custom fields for downloads, you cannot move the file elsewhere because it mismatches the amount of fields in the other category. However, the annoying bug is that even if the other category got the same fields, it still won't let you move the file.