Hey, for those who don't want to deal with cdjapan, I found these on Amazon.com (go there and search under "Haruhi Suzumiya"):
The Melancholy of Suzumiya Haruhi - Geki Chuu Kashuu Single with "God Knows," "Lost My Music," and "Koi no Mikuru Densetsu"
The character single volume 1
The "Hare Hare Yukai" end single
and they are taking pre-orders for the radio cd, volume 2 (to be released on 9/26)
ps Animenation.com also has these items for sale as welll...