Another movie which has Mahler's music in it (M1/III) and should be of interest to any classical music listener (except for Tchaikovsky-haters, since his Violin Concerto is in the focus). I was touched by the characters you care about from the beginning and moved by the music.
It only now arrived to Germany, and imdb says that it was already released in the UK in January, but there's a limited release now in the US (
http://www.imdb.com/title/tt1320082/releaseinfo).
Here's the trailer:
http://www.youtube.com/watch?v=3aait4aOxP0