Please be aware that the following packages are from unofficial repositories. That means they are not reviewed by openSUSE and may contain unstable or experimental software.
Sound Editor designed for KDE
Kwave is a sound editor designed for the KDE Desktop Environment. With Kwave you can edit many sorts of wav-files including multi-channel files. You are able to alter and play back each channel on its own. Kwave also includes many plugins (most are still under development) to transform the wave-file in several ways and presents a graphical view with a complete zoom- and scroll capability.