I was watching it (it came out this year, 2008, wasn't very successful though) and was surprised to hear a portion of this "hillbilly" sounding song called "Drown on the River" (when the guy in the movie gets knocked out of the poker tournament on the final card of the hand, the "river" card). Turns out Barry Gibb is writing a country album for himself (maybe that explains his buying the Johnny Cash estate), and this song fit the movie, so a portion was used.
YouTube - Barry Gibb - New Single 2007 - Drown On The River (MUSIC)