"We don't post the lyrics, but so far we haven't had a whole lot of complaints about that. So we'll consider that for the future, but so far it hasn't come up. I believe we would actually need a separate license for that (weird, I know) so if other people want the lyrics, please speak up in this thread and we can look into that."
(The last line not applied here)
I believe one instructor here advises singing lyrics (or humming)while learning a song. I know it would help me.