After watching Seasons 1-3 I've got the theme stuck in my head. And I love it!

Does anyone know where I can download MP3, or high qaulity WAV versions of the Season 1 & 2&3 themes?

I don't get how it is the number one tv song and there isn't even a high quality version of it online. gilligansisle.com has a wav but its not that good at all