guint threshold = GPOINTER_TO_UINT (((gpointer *)user_data)[2]);
//g_print("Got track named %s, times %d, %d\n", trk->name, p1->timestamp, p2->timestamp);
guint threshold = GPOINTER_TO_UINT (((gpointer *)user_data)[2]);
//g_print("Got track named %s, times %d, %d\n", trk->name, p1->timestamp, p2->timestamp);