I am sincerely sorry that many here have not expressed appreciation to you and your friend. Thank you for taking the risks to help everyone on the forum.
To the other posters, assuming that Possible-san is based in Japan, the culture there is nothing like it is here. It is customary in Japan to ignore all emails, phone calls, and voice messages from someone who has not been properly introduced via a known associate--NO responses to cold calls. For Possible-san's friend to accept unsolicited emails from strangers is way outside the norm in Japan. Moreover, the culture there is so much more law-abiding (to the very letter as well as the spirit) that to provide a copyrighted file is almost unheard of. Because of both of those things, it is not merely polite, but essential to recognize that the friend is going way beyond the call of duty and wants to know that he is not being disrespected for doing so. Disrespect is, perhaps, the worst thing one can do to a citizen of Japan.
Just some friendly cross-cultural advice. :)