Besides being a great resource for information on music and composers, the Online Conservatory (a project of Northeastern University and the Boston Symphony Orchestra) serves as a possible model for the next generation of concert notes. While many music teaches have their students work on concert notes for programs, the use of multimedia resources could add an interesting dimension to your program. Why not have students analyze the music they are performing, do some research and then create an audio recording of advanced “concert notes” for their parents to listen to prior to attending the concert? In some cases you will need to do some legwork on the copyright issues involved, but there are many possibilities for approaching this type of project.
I could also see this going hand in hand with a comprehensive musicianship approach to the ensemble curriculum. You never know, the next time you see a bunch of parents with mp3 players at the school concert, they may be listening to a lesson narrated by your students on the music they are about to hear!