Any way to navigate large audio files?

I downloaded an audiobook from my library – it is 5 files, approximately one hour each.  I was listening and fell asleep (!) somewhere in the second file.  Is there any way to skip along five minutes or so at a time to find my place again?  I really don’t want to listen to the whole thing from the beginning.

Press and hold >>| or |<< and it will fast-forward/fast-reverse through the file.