SNORT.
I'd be turned away because it isn't the soundtrack. It's just songs inspired by the story.
It's like packaging some Led Zeppelin songs that mention middle earth, and calling it a Lord of The Rings soundtrack.
Not sure why it's even being considered a soundtrack. The real soundtrack has been delayed and is still being completed.... meanwhile, there's another album out capitalizing on the demand for Narnia stuff. End of story.