I completely understand. My cousin made a tape telling his life story on it. After he passed I had to listen to it to type it out. He was like my brother, so I had to do it in MANY different sittings, hearing the voice was very tough. Speak your mind, as his loved ones can only hear him thru you, I suggest you keep on doing things for him/thru him, like the book, posting on sites like this, and reminding his fam and friends to keep puttin him up.
God bless you maam, your in my prayers