Changing the tempo for an entire song....

I have a completed song consisting of a single midi track and several audio tracks. The are multiple clips in each audio track. The current project tempo of 120bpm is a bit too slow and I'd like to speed it up a bit. I've done some reading and watched some videos on the Audiosnap feature. Can I accomplish my goal inside of X1 Studio and is Audiosnap the tool for the job? Thanks Pete