Q: Launching iTunes U site from Chrome

Anyone know the answer?

I've had the same issue for at least the past year, possibly longer. There isn't a solution that I'm aware of, so if I need to open a link to iTunes I use Firefox. For public links on our website the work around that I use is to direct users to the corresponding iTunesU preview page e.g,  https://itunes.apple.com/gb/podcast/london-school-economics-public/id279428154?m t=2 - while it still doesn't allow the user to open the collection in iTunes they can at least see the available content.