MP3 player callback

I'm trying to code an MP3/OGG player wich will support tracklists.

The problem, is that the MP3Player in the libogc doesn't have a callback called when the song is ended (use to play the next song). I still haven't read the OGG code.

Do you know if someone has already coded something like that?

Why do you need a callback?

if(!MP3Player_IsPlaying())
{
  printf("MP3 has stopped!\n");
}

Because i wan't to create a audio player that support tracklists. I know that i can pull the player to in order to know if the song has terminated, but this is an horrible way to do ( because this means that i need to create another thread than the one the player use)....

The better solution is that the player throw an event or call a callback when the song is terminated. That way, i just need to put the next song in the callback (and i need to put some thread safe stuff)

Generally players work like this... Real time coding is not the better option (it's just my opinion).