This is the full version using the disc cover trick on the title screen, not the faded out version on GH, I trust that's okay :3
http://www.filefactory.com/file/1724a8/n/03_Animal_Crossing_Theme_Full_Lengt_mp3
Startup noise version for extra nostalgia:
http://www.filefactory.com/file/d3a70e/n/03_Animal_Crossing_Theme_Full_Start_mp3
I searched the internet for it, but never found it, so I ripped it myself :P

Thanks for posting this! :) I didn't even know that there was an extended version of the song until I saw this post. I just listened to it now, and it sounds awesome.