Hi John,
Yes I have had a similar problem but over a much shorter time frame, say 10 mins = ten frames out.
Audio will not stretch to fit however video will.
I would try to use the Fit To Fill tool.
Firstly import your audio into the timeline, select your in & out points.
Then set your in/out points at the same points on the Video track then insert your footage using the fit to fill and it should squeeze/stretch the time to fit.
Hope this helps.
Cheers,
David Edwards
Drumroll Productions
Sydney, Australia
http://www.drumroll.com.au