Quite sure a simple basic problem...

[WhatMeWorry via Digitalmars-d-learn]

I've got a fairly complex D project (25+ modules) that has grown 
haphazardly over time. So it is not well designed. But I want to 
get the thing fully ported before refining the code. (that's 
called refactoring, I believe?)

Anyway, there is a new module called audio.d which which has all 
the sound functionality.

And in the (main.d) module is a code snippet like so

void main(string[] argv)
{
     // . . .
     auto blop = new AlurePlaySound("../bleep.wav");
     blop.play();
     // . . .
}

So all is well and good except I need to place the sound in 
another module (game.d) where
collisions are detected.

I tried:

module game;
import main;   // is this as ugly as I think it is?

if (collision[0])  // If collision make sound
     blop.play();


but this returns:  game.d(501): Error: undefined identifier 'blop'


So can someone tell me what various solutions to this problem or 
type of problems?  I presume there are quick and dirty solutions 
(like here) and more elegant solutions?

Would this type of problem fall under the domain of "scope".  
Like in global scope. But I don't think D has such a concept.

Thanks.