- Wave Purity Light v4.50Sp2 (1.4megs)
- Wave Purity Demo Add-on v4.50 Sp2 (1.1megs)
- Wave Purity Light v4.10 sp2 (1.3megs)
there is also Dart Pro for audio restoration.
and there are other wav editors listed on the board which can assist you, and even a free one, called Audacity. They are wav editors, but you can restore old recordings with them easily.