void beep()
{
    bool dosfx  = false;
    if ( Screen->HasItem )
    {
        itemdata id = Game->LoadItemData(Screen->item);
        switch(id->Family)
        {
            case IT_KEY: dosfx = true; break;
            case IT_LKEY: dosfx = true; break;
            case IT_BOSSKEY: dosfx = true; break;
            default: break;
        }
        if ( dosfx ) Game->PlaySound(SFX_BEEP);
    }
}