example music demo using fmod

///////////////////////////////
// header

#include "fmod/fmod.hpp"

//our tracks, ideally you could use an array of strings if you wish
typedef enum MUSIC
{
    NOTHING = 0,
    LOOP1A1 = 1,
    LOOP2A1 = 2,
    EVENT1A1 = 3,
    EVENT2A1 = 4,
    EVENT2B1 = 5,
    END = 6,
    HARDCORE_DISCO = 10,
    BURNING_ROME = 11,
    JUST_HESITATION = 12,
    ASDF = 13
};

//music class
class Music
{
public:
    Music(void);
    ~Music(void);

    void Initialise();
    void Deinitialise();

    void Update(double &dt);
    void SetMusic(MUSIC music);

    FMOD::Channel * GetChannel(){return channel;}
    MUSIC GetPlaying(){return musicPlaying;}

private:

    MUSIC musicPlaying;

    FMOD::Channel *channel;
    FMOD::System *system;

    FMOD::Sound *loop1a1;
    FMOD::Sound *loop2a1;
    FMOD::Sound *event1a1;
    FMOD::Sound *event2a1;
    FMOD::Sound *event2b1;
    FMOD::Sound *end;
    FMOD::Sound *hardcore_disco;
    FMOD::Sound *burning_rome;
    FMOD::Sound *just_hesitation;
    FMOD::Sound *asdf;

    double dMusicTimer;
};

/////////////////////////////////////
// cpp section

Music::Music(void)
{
    musicPlaying = NOTHING;
    dMusicTimer = 0.0;
}


Music::~Music(void)
{
}

//load
void Music::Initialise()
{
    FMOD::System_Create(&system);
    system->init(32, FMOD_INIT_NORMAL, 0);

    system->createStream("./music/LOOP1A1.ogg", FMOD_HARDWARE, 0, &loop1a1);
    system->createStream("./music/LOOP2A1.ogg", FMOD_HARDWARE, 0, &loop2a1);
    system->createStream("./music/EVENT1A1.ogg", FMOD_HARDWARE, 0, &event1a1);
    system->createStream("./music/EVENT2A1.ogg", FMOD_HARDWARE, 0, &event2a1);
    system->createStream("./music/EVENT2B1.ogg", FMOD_HARDWARE, 0, &event2b1);
    system->createStream("./music/END.ogg", FMOD_HARDWARE, 0, &end);
    system->createStream("./music/HARDCORE_DISCO.ogg", FMOD_HARDWARE, 0, &hardcore_disco);
    system->createStream("./music/BURNING_ROME.ogg", FMOD_HARDWARE, 0, &burning_rome);
    system->createStream("./music/JUST_HESITATION.ogg", FMOD_HARDWARE, 0, &just_hesitation);
    system->createStream("./music/ASDF.ogg", FMOD_HARDWARE, 0, &asdf);
}

//unload everything
void Music::Deinitialise()
{

    loop1a1     ->release();
    loop2a1     ->release();
    event1a1    ->release();
    event2a1    ->release();
    event2b1    ->release();
    end         ->release();
    hardcore_disco  ->release();
    burning_rome    ->release();
    just_hesitation ->release();
    asdf        ->release();

    system  ->close();
    system  ->release();
}

//called every frame
void Music::Update(double &dt)
{
    dMusicTimer -= dt;
    if(dMusicTimer <=0.0)
    {
        channel->stop();
        musicPlaying = NOTHING;
        dMusicTimer = 0.0;
    }

    system->update();
}

//use this to set the playing music
void Music::SetMusic(MUSIC music)
{

    if(musicPlaying != music)
    {

        channel->stop();

        switch(music)
        {
        case LOOP1A1:
            system->playSound(FMOD_CHANNEL_FREE, loop1a1, false, &channel);
            dMusicTimer = 283.0;    break;

        case LOOP2A1:
            system->playSound(FMOD_CHANNEL_FREE, loop2a1, false, &channel);
            dMusicTimer = 187.0;    break;

        case EVENT1A1:
            system->playSound(FMOD_CHANNEL_FREE, event1a1, false, &channel);
            dMusicTimer = 195.0;    break;

        case EVENT2A1:
            system->playSound(FMOD_CHANNEL_FREE, event2a1, false, &channel);
            dMusicTimer = 189.0;    break;

        case EVENT2B1:
            system->playSound(FMOD_CHANNEL_FREE, event2b1, false, &channel);
            dMusicTimer = 215.0;    break;

        case END:
            system->playSound(FMOD_CHANNEL_FREE, end, false, &channel);
            dMusicTimer = 242.0;    break;

        case HARDCORE_DISCO:
            system->playSound(FMOD_CHANNEL_FREE, hardcore_disco, false, &channel);
            dMusicTimer = 193.0;    break;

        case BURNING_ROME:
            system->playSound(FMOD_CHANNEL_FREE, burning_rome, false, &channel);
            dMusicTimer = 174.0;    break;

        case JUST_HESITATION:
            system->playSound(FMOD_CHANNEL_FREE, just_hesitation, false, &channel);
            dMusicTimer = 199.0;    break;

        case ASDF:
            system->playSound(FMOD_CHANNEL_FREE, asdf, false, &channel);
            dMusicTimer = 128.0;    break;

        default:
            break;
        }

        musicPlaying = music;
    }
    else
    {
    }


}