Should be simple, right? I’ve been googling articles, but haven’t found much.
Look for AudioSource.
http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/sound-effects-scripting
http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/sound-effects-in-unity-5
http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/adding-music-to-your-game
http://unity3d.com/learn/tutorials/projects/space-shooter/audio?playlist=17147 (part of space shooter tutorials)
http://unity3d.com/learn/tutorials/projects/survival-shooter-project (two bits on the difference between unity 4 and 5 sound)
I find that hard to believe