I mentioned to a Japanese chat friend that I liked music after he asked me what I liked. He then typed ほおほお. Does it mean something similar to I see?
「ほおほお」 is an interjection used when one is impressed or surprised. It roughly means "Oh, is that right?"
The dictionary spelling is 「ほうほう」 or just 「ほう」.
「ほおほお」or「ほうほう」is used to represent the sound that Japanese people sometimes make to express that they are listening to the other person or understanding what he/she said. It is something like "uh-huh," but it is informal and isn't used when they are talking with a superior or older person.