tremulous install

I just downloaded tremulous fro linux, but when I click on the file to install it it says:
gedit has not been able to detect the character coding.
Please check that you are not trying to open a binary file.
Select a character coding from the menu and try again.

I only have 2 codes listed in the dropdown menu, current locale and western unicode and neither works...someone help pls

I get the feeling that you're trying to open a binary installer in gedit. lol

Just so you know, tremulous is in the universe or multiverse (forget which) repos so you won't even need the binary installer in most cases.

Info on adding repos: http://help.ubuntu.com/community/Repositories/Ubuntu