Problems with Audio Sources

I recently decided to try to create a class which is (essentially) a song manager which would ideally allow me to create and manipulate songs to be different between each "loop" or change the song through the use of various triggers. Unfortunately, I ran into a bit of a snag -- the audio source components I attached to base object do not want to play.

I'll go step by step through the code:

     public AudioSource[] trackArray = new AudioSource[4];
     
     public float[] trackVolumeArray = new float[4];
     
     public float allTrackVolumeScale = 100.0f;
     
     public bool bClampValues = true;
     
     private int totalIndexOfVolumeArray;
     private int totalIndexOfTracksArray;

Nothing special here, I then initialize the variables in the Start():

 void Start () 
     {
         int trackArrayIndex = 0;
         int volumeArrayIndex = 0;
         
         // Initialize the Audio Source files..
         foreach( AudioSource track in trackArray )
         {
             trackArray[trackArrayIndex] = gameObject.AddComponent ("AudioSource") as AudioSource;
             track.volume = 1f;
             track.enabled = true;
             trackArrayIndex++;
         }
         
         // Initialize the Volume Settings..
         foreach( float trackVolume in trackVolumeArray )
         {
             trackVolumeArray[volumeArrayIndex] = 100f;
             volumeArrayIndex++;
         }
         
         totalIndexOfTracksArray = trackArrayIndex;
         totalIndexOfVolumeArray = volumeArrayIndex;
     }

Side Note: Earlier I tried to set each float by referring to it as "trackVolume" to no success, since you cannot redefine it. Is it wrong to use a foreach and not actually use each component your referencing?

Lastly, in the update function, I call a "check playing" function, which for testing purposes I had to change to try to be more direct with no results. The ideal way of doing this would probably be another "foreach".

     private void CheckPlaying()
     {
         if( trackArray[0].isPlaying != true )
         {
             trackArray[0].Play();
         }
         
         if( trackArray[1].isPlaying != true )
         {
             trackArray[1].Play();
         }
     }

I should also tell you that the AudioSource array has inputs in the inspector, and all I did from there is reference a audiosource that exists in the scene and is a child of the SongManager game object. Obviously, those AudioSources have an AudioClip attatched to them.

Is there any reason why this wouldn't be working?