here is the link to the episode
http://www.crunchyroll.com/showmedia?id=9512
the song is a bit pass the mid-point of the video.
it goes like this
itoshisa wa dou shitara todoku kana?
sotto yubi de tsunagatte
sore dake de hitori ja naito wakaru yo
ima wa tada shizukesa ni amaete
nukumori wakeatte
nemutte itai
nee yoru no mukou ni wa
hikari ga aru koto
anata wa tokidoki wasurete shimau no ne
tsubasa wo nakushita futari no yukue wo
tsuki dake ga mitsumeteru no
thanks!
It’ll be released on the Tsubasa Chronicle Best Vocal Collection on December 20th i.e. it’s not out yet!