Hi,I have used audiotools (this is the name) and find it very good and constantly being improved. Version 3 is about to come out. The author is very helpful and there is a good bulletin board. The web address is
http://www.btinternet.com/~amfish/index.htm
and that should give you a flavour of it and allow you to download.
Rana
(PS. This is from my other account, so I assume it will be my first posting as a guest)