Dont allow users to upload anything but pictures into my albums

[roflberryfarms]

hello all. I have a simple question but I could not for the life of me figure out how to do it. I want people to be able to register and upload files but I want them to only be able to upload pictures to albums that I create.
Any help?

[Αndré]

Clear the following config values:
- http://documentation.coppermine-gallery.net/en/configuration.htm#admin_thumbs_advanced_movie
- http://documentation.coppermine-gallery.net/en/configuration.htm#admin_picture_thumb_advanced_audio_extensions
- http://documentation.coppermine-gallery.net/en/configuration.htm#admin_picture_thumb_advanced_doc_extensions