TSE PC and sound issues

I have been trying to build the PC version of my game. When I run, I get all sorts of warnings about audio functions not existing, such as : OpenALShutdownDriver. These functions are in a file called audioFunctions.cc, which is only included in the XBox build, not in the Windows build. When I tried to add this and another helper file to Windows, it didn't work, because these files include XBox specific headers.

Before I go to a lot of work on this, I thought I'd ask:

1. Is this audio system meant to be XBox only? Or was it omitted because Garage didn't have time to make it work on PC?
2. If not, should I finagle these files so they build in Windows? OR:
3. Do I need another version of the common script audio.cs that doesn't use these functions?

I want sound in PC!!

Thanks!

Eric