Requirements of soundsystem

As people have been talking about making sounds for the game and AndrewBuck talking about how to implement it I think we should decide on some requirements of this sound system, and then choose a existing system that will fulfill these requirements, as we did when Ogre3D was chosen for the graphics of our game.
I only really have on requirement, namely:
* The system should support multi-channels, e.g. 5.1 surround, or 7.1 surround, actually a flexible system which can support and arbitrary number of speakers would be best, as we can then accommodate any future sound system, like 5.1 and 7.1 are standard now a days.
* This second bullet is not a real requirement, but more a request or dream. I thing it would also be very nice to have very good head-phone support, giving a good spatial feeling, like you get from binaural recordings.
Here is the list of requiremnts we have agreed to in this thread (I will maintain it as we get more requiremnts):
I only really have on requirement, namely:
* The system should support multi-channels, e.g. 5.1 surround, or 7.1 surround, actually a flexible system which can support and arbitrary number of speakers would be best, as we can then accommodate any future sound system, like 5.1 and 7.1 are standard now a days.
* This second bullet is not a real requirement, but more a request or dream. I thing it would also be very nice to have very good head-phone support, giving a good spatial feeling, like you get from binaural recordings.
Here is the list of requiremnts we have agreed to in this thread (I will maintain it as we get more requiremnts):
- * Support multi-channels, e.g. 5.1 and 7.1, and be flexible enough to support future speaker configuration standards.
* Be cross-platform
* Well documentet