I think there's some actual DJ wedding compilation discs you can buy. Couldn't spring for a DJ? Any decent wedding DJ has all that stuff. I've always assumed you just give the DJ a tracklist beforehand.
Are you looking for something beyond Cotton Eyed Joe, What is Love, etc. etc. ?
Most mainstream trance is filled with the stuff:
http://forums.di.fm/world-of-music/i-need-help-w-putting-together-trance-love-song-cd-131350/
like:
Oceanlab - Sky Falls Down
Oceanlab - Satellite (Above & Beyond Remix)
Oceanlab - Beautiful Together (Signum Remix)
Marco V - I Feel You (Thomas Datt's 2v2 Remix)
Armin Van Buuren - Burned With Desire (Rising Star Remix)
Smith & Pledger presents Aspekt - Hi Jack (Vocal Mix)
Smith & Pledger - Forever (Vocal Mix)
Kyau vs. Albert (ft. Julie) - Not With You (Ronski Speed Vocal Mix)
Solar Stone (presents Elizabeth Fields) - Speak In Sympathy (Mike Shiver's Catching Sun Remix)
The Thrillseekers (ft. Gina Dootson) - By Your Side
The Thrillseekers (ft. Aruna) - Waiting Here For You
Markus Schulz (ft. Carrie Skipper) - Never Be The Same Again (Jose Amnesia & Shawn Mitiska Remix)
DT8 Project - Hold Me Till The End (Aly & Fila Remix)
Mike Shiver & Elevation - Hurricane (Mike Shiver Remix)
...but I don't really know...I figure that weddings are pretty formuliac: most of the bride's favorite tunes + a few groom tunes, some slow dance songs (one for the bride and groom to some classic thing like Canon in D er whatever slow dance song, the bride and father slow dance, some tunes for the older crowd like Brown Eyed Girl, Beatles maybe some April Wine! AC/DC Shook Me All Night Long...thats about it.
