MP3 SHIELD AND RELAY SHIELD

Good morning;

I have a ARDUINO UNO + SHIELD MP3 + RELAY SHIELD

What I need is to assign a relay to an mp3 track around, and when the track begins the following track relay and so up to 4 songs assigned to a relay. To start the cycle I press a button and begin to sequence.

We press a button and start the sequence:

-relay 1 - track001.mp3 -relay 2 - track002.mp3 -relay 3 - track003.mp3 -relay 4 - track004.mp3

You can help me?

Thank you very much.