Columbus - quick question

I have a quick question which I hope someone might be able to help me with...

I have some audio-books on an SD card which I am listening to. These books are in MP3 format and very big - one was 30 hours in length.

However, this morning on the way to work, listening to my book, and at around the 13 hour mark, I inadvertently pressed the forward button, and it skipped to the next track.

On going back to the track I was listening to, and keeping my finger in the fastforward button it take too long to get to where I was. It takes 4 seconds to jump forward 1 minute on the track. To get back to the 13 hour mark, I would have to keep my finger on the button for 52 minutes :(

Is there any way I can get the unit to jump to a specific point in the track, or at least speed up the fast forward so that I can get to my point quicker?

Thanks...