Matching Imported BPM to Project BPM

I’m trying to remix a song. I’ve imported the original song into my project but I can’t seem to match the tempo correctly. I’ve tried opening up the audio (double clicking it) and analyzing the audio, but the tempo (according to the tempo track it creates) is all over the place. It’s a taylor swift song; I highly doubt the tempo fluctuates as much as the click track says. What’s the best way to get an imported file and the project beats to sync?

I would suggest the time warp tool. I use it all the time to match tempo. I can usually adjust every 8 bars or so in a pop tune to get it to match up fairly accurately. Then, tweak the occasion bar inside those 8 bars where and when needed.

Good luck,