How to check if any audio is playing from an array, when chosen at random

I have an array set up with 6 difference audio pieces attached. I want to make sure that no audio is playing before another one starts, but I cannot figure out how to check for it. This is the code I am using

Code (CSharp):

1. if(!ToySpawnLaugh[].isPlaying)
2.         ToySpawnLaugh[Random.Range(0, ToySpawnLaugh.Length)].Play();

The second line works perfectly, but it is what to place in the [], which I cant figure out. Either that, or I have chosen to do this the wrong way around. Anyone possibly know a way to set this up

 

Ideally you would keep track of which track you started playing.

Code (CSharp):

1. AudioClip currentClip;
2.  
3. void Update() {
4.     if(currentClip != null && !currentClip.isPlaying){
5.         currentClip = ToySpawnLaugh[Random.Range(0, ToySpawnLaugh.Length)];
6.         currentClip.Play();
7.     }
8. }

If you really must check all clips, you can iterate through the array like this:

Code (CSharp):

1. void Update() {
2.     if(AnyClipIsPlaying()){
3.         ToySpawnLaugh[Random.Range(0, ToySpawnLaugh.Length)].Play();
4.     }
5. }
6.  
7. bool AnyClipIsPlaying() {
8.     for (int i = 0; i < ToySpawnLaugh.Length); i++){
9.         if (ToySpawnLaugh[i].isPlaying) return true;
10.     }
11.     return false;
12. }