Music Man Dance Music
It is a real struggle! I did the grunt work 5 years ago when we performed this, by recording the piano accomp. on garage band, and marking the cuts for the orchestra. This year we are cutting a bit more off the dance breaks, and I taught myself how to cut my old garage band clips. (well, someone on youtube taught me)
Getting ahead of the choreographer is the key, and giving him/her exactly what you'll be using. Otherwise you may have to get someone who can see/hear the music to mark your score. THERE ARE NEVER ANY RECORDINGS THAT MATCH THE SCORE. And some films have added music that is not even in the score.