Length Of File Name Cut Short For Downloads

Hi,

I currently allow my visitors to download the video from my site. However I notice if the video that was uploaded is longer than 40 characters in length, the remainder is cut off and the user is given a "file not found" error because of the shortened name.

EXAMPLE:
"Aerosmith-i_dont_want_to_miss_a_thing.mp4"

would be cut to:
"Aerosmith-i_dont_want_to_miss_a_thing.mp"

And this file is not able to be downloaded.

The video uploads and plays fine, its just the download filename that is cut short. Is there somewhere in the script I can change the length of the filename allowed and make it longer?

My site is dedicated to music videos so some filenames can get very long

Any help is greatly appreciated!