i try to use your code but when level change song doesn't change. This is my code. please check it. thx.

function main()
{
var curr_song;
curr_song=media_play("song_game1.wma",null,100);
{
media_stop(curr_song);
level_load("tst2.wmb");
wait(3);
curr_song=media_play("song_game2.mp3",null,100);