How to play sounds in a certain order?

[Noam Noam]

I am creating a piano program with an record in it.
I am in order of the play button to play the sounds that the user recorded, I need to create a method that plays the recorded sounds in the order that the user played them.
So my question in basicly, how do I play sounds in a certain order (one sound plays, ends, and then the next one starts)?
thanx!