/*
* Insert a URL into the current playlist.
*
* This method raises an Xmms::Error exception if XMMS is not running.
*
* Examples:
* # add a url after the 45th element in the playlist
* remote.ins_url 'http://www.hhmecca.net/cool_song.mp3', 45
*
*/
static VALUE xr_pl_ins_url(VALUE self, VALUE url, VALUE pos) {