This post is the top search result for "migrate itunes library," and is very high up for "transfer itunes library." I get 16,000 views a month on it. In the month after Christmas, I'll probably get 30,000 views (everyone getting new computers). I feel like I could sign up direct advertisers for this. I'm using AdSense right now, but you can imagine that isn't much revenue. Any suggestions?
If you know of a product that does a good job and is easier than doing all of these steps manually; you could do an affiliate link for that product. There are tons of people who are intimidated by anything that takes more than 2 steps to do.
Agreed with @icey. You could probably locate a decent paying CPA from affiliate sites like http://www.wickedfire.com/ that would provide several bucks for each purchase/view of the advertised software solution. (A DIY tutorial making money from automated services. Ha!)