Midi section:

itooshi hito no tameni
everything for you
star
perfect world
yume-kamo-shirenai
Yoga akeru mae ni
starless
sadame no hoshi
voice

Midis from other anime

Ghost Sweeper
Flame of Recca
Rurouni Kenshin
Sobakasu (from kenshin)
Magic Girls

Video clips:

from ep.52