now what i want to do: once the entire song goes through a loop, (i am monitoring the songs length) i want it to check the same logic before that triggered the audio track. heres the idea of what I'm doing, but its not repeating the track again after it plays:

2.   if ( myPort.available() > 0) {  // If data is available,
3.     val = myPort.read();         // read it and store it in val
4.   }
5.               // Set background to white
6.   if (val == 1) {              // arduino is sending a "1" when a sensor argument is met. 
7.    groove.play(); //the song plays entirely. the argument does not interfere if its met.
8. 
   
9. if (x < 18.0 && val ==1){  //x is measuring the length of song, float numbers 1-20 (20 is end). not working.
10.   groove.play();