You can limit the maximum size of files for download/upload. You must set the rule (regular expression) for the URLs where the limitation will work, e.g. rule .*  means all URLs.

Below you can limit download/upload speed for users. The rule (regular expression) describes user names for which the speed limitation will work, e.g.  User1|User2|Admin .

giverrgilskie

Add to Black list rule like this:  \.(jar|mp[34]|flv|mov|mpe?g|avi|wmv)(\?|$)

Sir Denzz the rule which I inserted to blacklist is working. Thank you so much