The Birmingham Post has an interview the screenwriter of Lip Sync,  he mentioned that the script has been sent to Dan Radcliffe. This does not mean that Dan has been cast in the film, but I will update you if any more news about this surfaces!

“I have spoken to his agent and he loves the script. It would be great for him to play a romantic lead. Alex is not somebody who is particularly smooth and I can’t think of anyone better to play it than Daniel. He has got that awkwardness but he is still handsome, and both boys and girls like him.”

Thanks SS!