some good songs are:
i promise you by ronan keating really good for walking down the isle
heaven by dj sammy candlelight version
beautiful in my eyes by joshua kadison
i finally found some on by bryan adams and barabra streistane
endless love by diana ross and lionel richie
you are so beatiful by joe ****er
amazed by lonestar
thankyou for loving me by bonjovi

are just some of the great wedding songs there are many more i had most of these in my wedding a year ago hope it helps good luck