Set volume to all sound files - common coding

[font=Arial]Hi Guys,

In my projects i used more than 80 “.wav” files. so i used many variables. like ( vi_snd=new Sound(); ).
there is any possible to set volume to all files in common coding.

i try to this Sound.prototype.setvolume(40); and Sound.prototype.volume=40;

but its not work. because setvolume is a method. so we dont use prototype.
then volum only available on media files.

if ann one help to me.

Cheers,
S.Vijay[/font]