Open Sound System 4.0 is coming to Haiku
Haiku developer François Revol has done an initial port of the Open Sound System to Haiku. OSS has been open sourced by 4front Technologies recently, and powers the audio hardware of many Unix derivates.
OSS features an impressive list of supported devices - the port aims to seemlessly integrate with Haiku's media subsystem, the OSS drivers will just work like any other of the currently available audio drivers.
For further information, please refer to this announcement made on the OSS developer mailing list.

Comments
Re: Open Sound System 4.0 is coming to Haiku
This is very good news, as it will provide us with a lot of driver support right out of the box, and it will free up more time for other vital things. Will there be a large difference between native and OSS ported drivers, performance and functionality wise?