Folder management

This may seem like a small detail, but I would like it if, when adding a folder, there was an option to either list the folder itself, or to directly list the folder's contents, as is currently the default.
I have a lot of hard drives, with my music stored in one location, and other audio, like lectures and audio books, stored elsewhere. I'd prefer if Subsonic could let me keep these separate. But when I add my music folder and my audio book folder, Subsonic mixes all the contents together, so that if I want to find an audio book, I have to scroll through ALL my music and other audio. It takes a while.
I have a lot of hard drives, with my music stored in one location, and other audio, like lectures and audio books, stored elsewhere. I'd prefer if Subsonic could let me keep these separate. But when I add my music folder and my audio book folder, Subsonic mixes all the contents together, so that if I want to find an audio book, I have to scroll through ALL my music and other audio. It takes a while.