In some DVD authoring programs, you can, up to a point. Encore allows 40 sec., and some cell-editing programs do have work-arounds. Most of these are very expensive, with the cheapest being DVD Studio Pro at ~ US$250.00. Sonic Scenarist allows more, but unless you are very "flush," I'd not even think about it.
The best that I have done is to choose music that fades up fades down within the time frame, and has enough repetition, so that the user does not notice this. I've picked a dozen such pieces (SmartSound) and edited them to work like the music is continuous, when it is looping.