OR go to this link http://www.nch.com.au/switch/ Download the free version and just drag the mp3 song or whatever and it will ask switch what to what Put Mp3,Wav or whatever to Ogg.Soooo much easier.
No, learn to use Audacity and edit the song so it's not a full length song.http://forum.blockland.us/index.php?topic=13422.0