Can I use MSB subsonic files to access MS?
From the looks of things there. http://forums.subsonicproject.com/forums/t/2968.aspx It seems that an “offline beta” has been created, but looking at the stream, it seems that the problems have encountered problems. Access is actually a different animal (it's faux-db, for goodness), so anyone who wants to write a DAL like Subsonic will be aiming at a real deal like Oracle, MySQL and MS SQL. Any reason you at least are not using one of the MS SQL Server Express Editions ? Of course, you will get more miles, scalability and compatible tools by walking this path.
Maybe DataProvider is here
https://github.com/subsonic/SubSonic-2.0/blob/master/SubSonic/DataProviders/AccessDataProvider.cs
along with a complete subsonic project.