void intf_PlaylistPrev ( playlist_t * p_playlist );
void intf_PlaylistDestroy ( playlist_t * p_playlist );
void intf_PlaylistJumpto ( playlist_t * p_playlist , int i_pos);
void intf_PlaylistPrev ( playlist_t * p_playlist );
void intf_PlaylistDestroy ( playlist_t * p_playlist );
void intf_PlaylistJumpto ( playlist_t * p_playlist , int i_pos);