you can get unlocker ->
http://ccollomb.free.fr/unlocker/
it allows you to delete/rename files u get error messages from (file in use etc.)
or try a picture repair program..
i haven't used any so i don't know which one would be good, i can't find any free ones.
there's a demo i found ->
http://www.softpedia.com/get/Multimedia/Audio/Aud...-Media-Fixer.shtml
/ 
gif 
