유투브 api 실행 결과를 담는 방법요?

http://gdata.youtube.com/feeds/api/videos/KUCceZNogb4 

위의 유투브 api를 실행하면 
아래와 같은 xml 실행 결과를 출력해 주는데 이 출력 결과를 변수에 담으려면 어떻게 해야 할까요?
파싱이나 컨테츠를 담는 함수로는 출력결과물을 저장할수가 없네요..
궁극적인 목표는 아래의 내용중 실제 동영상 주소를 뽑아와서 모바일용 유투브 영상 스킨을 만들기 위함인데요..

뭐 더 좋은 방법 있으면 좋구요~~
부탁드립니다~

<?xml version='1.0' encoding='UTF-8'?><entry xmlns='http://www.w3.org/2005/Atom' xmlns:media='http://search.yahoo.com/mrss/' xmlns:gd='http://schemas.google.com/g/2005' xmlns:yt='http://gdata.youtube.com/schemas/2007'><id>http://gdata.youtube.com/feeds/api/videos/KUCceZNogb4</id><published>2012-12-09T05:12:14.000Z</published><updated>2012-12-09T05:13:28.000Z</updated><category scheme='http://schemas.google.com/g/2005#kind' term='http://gdata.youtube.com/schemas/2007#video'/><category scheme='http://gdata.youtube.com/schemas/2007/categories.cat' term='People' label='인물/블로그'/><title type='text'>20121209 sg3</title><content type='text'/><link rel='alternate' type='text/html' href='http://www.youtube.com/watch?v=KUCceZNogb4&feature=youtube_gdata'/><link rel='http://gdata.youtube.com/schemas/2007#video.responses' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/KUCceZNogb4/responses'/><link rel='http://gdata.youtube.com/schemas/2007#video.related' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/KUCceZNogb4/related'/><link rel='http://gdata.youtube.com/schemas/2007#mobile' type='text/html' href='http://m.youtube.com/details?v=KUCceZNogb4'/><link rel='self' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/KUCceZNogb4'/><author><name>cheomdanChurch</name><uri>http://gdata.youtube.com/feeds/api/users/cheomdanChurch</uri></author><gd:comments><gd:feedLink rel='http://gdata.youtube.com/schemas/2007#comments' href='http://gdata.youtube.com/feeds/api/videos/KUCceZNogb4/comments' countHint='0'/></gd:comments><media:group><media:category label='인물/블로그' scheme='http://gdata.youtube.com/schemas/2007/categories.cat'>People</media:category><media:content url='http://www.youtube.com/v/KUCceZNogb4?version=3&f=videos&app=youtube_gdata' type='application/x-shockwave-flash' medium='video' isDefault='true' expression='full' duration='150' yt:format='5'/><media:content url='rtsp://v6.cache6.c.youtube.com/CiILENy73wIaGQm-gWiTeZxAKRMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='150' yt:format='1'/><media:content url='rtsp://v6.cache6.c.youtube.com/CiILENy73wIaGQm-gWiTeZxAKRMYESARFEgGUgZ2aWRlb3MM/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='150' yt:format='6'/><media:description type='plain'/><media:keywords/><media:player url='http://www.youtube.com/watch?v=KUCceZNogb4&feature=youtube_gdata_player'/><media:thumbnail url='http://i.ytimg.com/vi/KUCceZNogb4/0.jpg' height='360' width='480' time='00:01:15'/><media:thumbnail url='http://i.ytimg.com/vi/KUCceZNogb4/1.jpg' height='90' width='120' time='00:00:37.500'/><media:thumbnail url='http://i.ytimg.com/vi/KUCceZNogb4/2.jpg' height='90' width='120' time='00:01:15'/><media:thumbnail url='http://i.ytimg.com/vi/KUCceZNogb4/3.jpg' height='90' width='120' time='00:01:52.500'/><media:title type='plain'>20121209 sg3</media:title><yt:duration seconds='150'/></media:group><yt:statistics favoriteCount='0' viewCount='15'/></entry>