Changing sound engine? (ffdshow etc)

Can I change the sound engine without uninstalling and reinstalling? I think I remember having to choose between using ffdshow or not when I launched songbird straight after installation but can't find an option to modify it now.
I sometimes get slightly stuttering playback and assume it's something to do with that so I'd like to change my original decision (don't remember which I actually selected at the time).
Thanks