Mark -
If you really want to appreciate the Goon Shows play 'em backwards!!!!
Re sound forge - yes you can improve poor recording with it and results vary a lot depending on the original - removing hiss can aid clarity also you can up the level of the recording if it was originally under recorded - frugal use ofthe graphic settings can also help - beware though you can spend a lot of time getting things to a resonable state - but it's usually worth it!
We recently did a radio show where we were playing a couple of tracks from old cassette tape - before we went on air it was run through a simalar programme and saved to hard disc then transmitted the quality was greatly improved just by using a few presets!
- If it's good enough for the BEB its good enough for us!!!!
Give it a try - nothing lost....
Pete