There's a couple that have been played in various trailers for the movie but here's the main two songs. The song playing at the :30 mark is called "Live Your Life". It's by T.I. featuring Rihanna off of the album Paper Trail by T.I. And the second song with the guitar riff is "Joker and the Thief" by Wolfmother. Hope this answers your question. - Joe
The song playing in The Hangover trailer is "Right Round" by Flo Rida.
"Numa Numa" by Ozone (Romanian)
we're the three bestfriends that anyone could have
its "decode" by paramore
The song is called "Whiskey Hangover".
Hangover - song - was created on 2011-10-04.
G.N.O. is the hangover song of the year wolfmother - joker and the thief
The song in the trailer is calmer verion (more epic) of the song "Light of Aiden" by Cafe Del Mar
the newest trailer for Battlefield 3 has the song "99 problems" by rap artist Jay-Z
Destiny by Syntax. Love this song.
The name of that song is "Another Dance"
Wham Bam
Menomena - Wet and Rusting