Nothing. No change.
root@OMV:/media/845bf6a4-d31c-4f05-80b7-249e51a4e743/TestMedia# chmod 755 /media/845bf6a4-d31c-4f05-80b7-249e51a4e743/TestMedia/*
root@OMV:/media/845bf6a4-d31c-4f05-80b7-249e51a4e743/TestMedia# ls -la
total 260
drwxrwsr-x 2 root users 4096 Mar 21 16:30 .
drwxr-xr-x 7 root root 4096 Mar 20 22:55 ..
-rwxr-xr-x 1 Niels users 83232 Feb 1 2013 folder.jpg
-rwxr-xr-x 1 Niels users 83232 Feb 1 2013 gfdgd.jpg
-rwxr-xr-x 1 Niels users 83232 Feb 1 2013 gfdsgb ssnh.jpg
root@OMV:/media/845bf6a4-d31c-4f05-80b7-249e51a4e743/TestMedia#