STRING* bg_sounds[12];
bg_sounds[0] = "song1.mp3";
...
bg_sounds[11] = "song11.mp3";

var bg_handle;

bg_handle = media_play(bg_sounds[0], NULL, 100);

STRING* names[10];

void main(){

	str_cpy(names[0], "song1.mp3");

	var bg_handle = media_play(bg_sounds[0], NULL, 100);

}

STRING *strArray[10];

function strArray_create ()
{
   int index=0;
   for ( ; index<10; index+=1 )
      strArray[index] = str_create("");
}

function strArray_remove ()
{
   int index=0;
   for ( ; index<10; index+=1 )
      str_remove ( strArray[index] );
}

function main ()
{
   strArray_create ();
   str_cpy ( strArray[0], "song1.mp3" );
   var hndSong = media_play ( strArray[0], NULL, 100 );
   while ( media_playing ( hndSong ) )
      wait(1);
   strArray_remove ();
   sys_exit ( NULL );
}

STRING* names[99];

void main(){
       int i = 0;
       for(i=0; i < 99; i++){
              names[i] = str_create("");
       }

        str_cpy(names[0], "Arty - Kate (Original Mix).mp3");

         media_play(names[0], NULL, 100);

         while(1){
               draw_text(names[0], 10, 10, COLOR_WHITE);
               wait(1);
         }
}

TEXT *txtSongs = { string ( "song01.ogg", "song02.ogg" ); }
...
var hndSong = media_play ( (txtSongs.pstring)[1], NULL, 100 );