you just need any kind of sound recorder really. If you want a free one, just download CD Wave (google it), it records wav files, and you'll need another program to convert to mp3, but it does the trick. Or you can get a cracked version of Soundforge or Cool Edit Pro. Just make sure when you are recording that you leave your computer alone, because the recording will be of all sound on the computer, so MSN bleeps and any kind of little clicks from doing stuff will be recorded as well.