Replace the default opening crate sound for that of Zelda: Ocarina of time
Here is a "mod" that I created for TF2 fan and Zelda, this mod replaces the the basic opening sound for the opening sound of a large chest in Zelda: Ocarina of Time, and the sound that a player wins a achievement is replaced by the sound of "obtaining" the loot of the crate of Zelda: Ocarina of time
Enjoy !