The song

it's simply called 'finale' and is by 'L'arc En Ciel'. here's the words: http://www.lava.net/%7Eraistlin/larc/finale.html. don't know about downloading(try the usual places i guess) but you can buy it here http://www.amazon.co.jp/exec/obidos/ASIN/B00005GZZ7/qid%3D1013199650/sr%3D1-13/ref%3Dsr%5F1%5F2%5F13/249-4656636-8969103... and here's a translation of the tracks on the soundtrack http://www.theringworld.com/ring0Titles.txt

Hey-hey Tea! Can I have some too? With lotsa sugar and honey and... oh yeh, don't forget the lard!

very good song, can be found on their "best of" album 1998-2000.

The movie also features their song Hole in the beginning.