Playing sounds
Open the LoadLevel.cpp file and add the call to the new populateEmitters function, as highlighted in the following code:
void Engine::loadLevel()
{
    m_Playing = false;
    // Delete the previously allocated memory
    for (int i = 0; i < m_LM.getLevelSize().y; ++i)
    {
        delete[] m_ArrayLevel[i];
    }
    delete[] m_ArrayLevel;
    // Load the next 2d array with the map for the level
    // And repopulate the vertex array as well
    m_ArrayLevel = m_LM.nextLevel(m_VALevel);
    // Prepare the sound emitters
    populateEmitters(m_FireEmitters, m_ArrayLevel);
    // How long is this new time limit
    m_TimeRemaining = m_LM.getTimeLimit();
   ...
