> There is also the question of ALSA compatibility layer which is in my > understanding slowly incorporated into OSS. Is it really important to have > ALSA compatibility layer? Can somebody give me an example of the software > which requires ALSA (please exclude Skype although there is OSS version)
Yes, an ALSA compatibility would allow us to use Linux binaries (through compat_linux) which require ALSA. The most infamous example is the Adobe Flash 9 Plugin.

