MP3 looping help

programming flash
1

I used to have a single MP3 that would continuously loop on my website with the following actionscript:

x = new Sound();
x.loadSound("WITHOUT INST.mp3", true);
x.onSoundComplete = function() {
    x.loadSound("WITHOUT INST.mp3", true);
}

This worked perfectly for me, but now I have a second MP3 that I want to add to the loop, so I set it up like this:

x = new Sound();
x.loadSound("WITHOUT INST.mp3", true);
x.onSoundComplete = function() {
    x.loadSound("new_song.mp3", true);
}

In this case it plays without inst.mp3 and then when that is complete it plays my next song (new_song.mp3). The problem starts when new_song.mp3 ends. New_song.mp3 will repeat forever because there is not another onSoundComplete telling it to move on. My question is simple and I apologize ahead of time for not being very capable with actionscript. I want my looping background music to go like this:

  1. Without inst.mp3
  2. new_song.mp3
    3 Without inst.mp3
  3. etc etc etc.

I want it to play through my two tracks and start over again with the first track when the second track completes. I want it to keep repeating like this forever, or until someone hits my stop button.

Thanks for any responses.