Where do you guys download your Big Bang songs?

what is really good is this site if you havent heard of it 4shared.com its a site where you just type in whatever you want and they will have it for you. like type "big bang haru haru" and they have the song. i go there a lot. if they dont have what i want i go to google and type big bang haru haru mp3 download or big bang haru haru download if google does not have it i go to youtube and see if they have download links avaliable