Simple(est) FMOD manager. Just Creates the FMOD:::system object as a singleton.

FModManager.cpp

#include "FModManager.h"

FMOD::System *FModManager::system=0;


FMOD::System* FModManager::System(){
	if(!system){
		FMOD_RESULT result;
		

		result = FMOD::System_Create(&system);		// Create the main system object.
		if (result != FMOD_OK)
		{
			std::cout << "FMOD error! (%d) %s\n" <<result;// << FMOD_ErrorString(result);
			exit(-1);
		}

		result = system->init(100, FMOD_INIT_NORMAL, 0);	// Initialize FMOD.
		if (result != FMOD_OK)
		{
			std::cout << "FMOD error! (%d) %s\n" << result;// << FMOD_ErrorString(result);
			exit(-1);
		}

	}
	return system;
}

FModManager.hpp

#pragma once
#pragma comment(lib,"fmodex_vc.lib") 
#include "fmod.hpp"
#include <iostream>
 
class FModManager
{
public:
	static FMOD::System* System();
 
private:
	static FMOD::System *system;
 
};

OgreApp1.cpp

void OgreApp1::createScene(void)
{
    Ogre::Entity* ogreHead = mSceneMgr->createEntity("Head", "ogrehead.mesh");

    Ogre::SceneNode* headNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
    headNode->attachObject(ogreHead);

    // Set ambient light
    mSceneMgr->setAmbientLight(Ogre::ColourValue(0.5, 0.5, 0.5));

    // Create a light
    Ogre::Light* l = mSceneMgr->createLight("MainLight");
    l->setPosition(20,80,50);

    result = FModManager::System()->createSound("C:/Program Files (x86)/FMOD SoundSystem/FMOD Programmers API Windows/examples/media/wave.mp3", FMOD_3D, 0, &sound);
 



}

bool OgreApp1::keyPressed( const OIS::KeyEvent &arg )
{
   

    if (arg.key == OIS::KC_X)   // toggle visibility of advanced frame stats
    {
       FModManager::System()->playSound(FMOD_CHANNEL_FREE, sound, false, &channel);
    }

    return BaseApplication::keyPressed(arg );
}

OgreApp1.h

#include "../FModManager.hpp"

class OgreApp1 : public BaseApplication
{
public:
    OgreApp1(void);
    virtual ~OgreApp1(void);
	virtual bool keyPressed( const OIS::KeyEvent &arg );

	FMOD_RESULT result;
	FMOD::Sound *sound;
	FMOD::Channel *channel;

protected:
    virtual void createScene(void);
};