Here is a complete collection of Arai Akino's music! Before I get started though, I'd like to thank Kyokotsai from Anime OST, for providing me, and everyone else here, with the majority of these albums in great quality. Now I am returning the favor by making it easier to get for everyone.

Albums

Sora no Sphere:
http://www.megaupload.com/?d=WFIBICR7

Sora no Uta:
http://www.megaupload.com/?d=SZXNL4LH

Eden:
http://www.megaupload.com/?d=BZX0P700

RGB:
http://www.megaupload.com/?d=W9J29HUV

Kouseki Radio:
http://www.megaupload.com/?d=4P2KPLYT

Sora no Niwa:
http://www.megaupload.com/?d=0I57BAVR

Furu Platina:
http://www.megaupload.com/?d=TFZ3AH5O

Sora no Mori:
http://www.megaupload.com/?d=VQ82NWQ9

Natsukashi Mirai:
http://www.megaupload.com/?d=EYZYQFFM


Singles

Kimi e Mukau Hikari:
http://www.megaupload.com/?d=6ZTQQ9XU

Kin no Nami Sen no Nami:
http://www.megaupload.com/?d=K7LPOX3S

Natsukashi Umi: (B-side)
http://www.megaupload.com/?d=H0AF434V

Others

VHmusic: (Album containing some instrumental and more acapella songs.)
http://www.megaupload.com/?d=UWL6LV94

VHmusic 2 - The First Euro Tour: (Her concert)
http://www.megaupload.com/?d=NIAPQAH1

Extras (Various other songs she's done for anime)
http://www.megaupload.com/?d=OD87UAZA