Check jpopsuki tracker. They had the entire HP discography from 1997-2006 last I checked. Probably can just pick and choose what to get.
ehhhhhh! is the site of the "jpopsuki tracker" www.jpopsuki.com? when i visited it, it says:
Jpopsuki.com is down for maintenance. We'll be back as soon as possible.
please tell me the site (baka ne baka ne generozjamil!)