Discjuggler is an amazing program and one of my favourites. However I do agree that it is quite complex. It has the cool option of being able to control multiple writers at once, making duplicating much easier. I used to have a 6 disc writer setup and using DJ to burn to all drives at once. Great for quickly duplicating corporate presentation CDs.

For audio editing I tend to use Sony SoundForge for most basic audio editing. But for the best you can't beat Adobe Audition. That is very powerful with so many features I've not even touched about 95% of them. I've used both since they originally came out, and Soundforge for years before Sony bought it, as it always came as part of the Macromedia Director bundles. But with the latest version of Adobe CS4, Adobe's Soundbooth audio editing program can now be used with multiple tracks making it more useful.