Here are a few versions of McFly Don't Stop me Now none of these are official as far as I am aware of.
Live:(This is taken from Top Of The Pops when Tom (blonde one) had a sore throat so Danny (Other Guitarist) had to sing the entire song: link
Acoustic: (This is just Danny and Tom on acoustic guitars singing): link
Queen Vs McFly Remix: (This isn't great but its free lol): link
Video: ( I arnt sure if this has been officialy released in any shape or form if it has I shall remove it) link
Enjoy!