Sound Studio is a Tcl/Tk application written by Paul Sharpe as his third year individual project, for which he received the Microsoft Prize for Software Engineering. It was subsequently improved by Robin Whitehead.
It enables recording, playback and simple cut & paste editing of sound files of diverse formats on a PC equipped with a soundcard and the OSS (formally VoxWare) sound drivers.
It uses Lance Norskog's Sox for format conversion; the version we've used is bundled together with this software in its entirety to prevent incompatibility problems, although you should try it with your own sox if you have a more recent one.
Sound Studio is now "finished", but no doubt there are loads of bugs still to be found and features to be added.