Frontend Change

I've made a pretty significant front end change to a single window design. I would have liked to give the user a choice, but this seems to be a better layout. For anyone interested, please grab the code from cvs and see if you have any problem using the new interface. You may have to stretch out the main window to a larger size the first time you run (since it remembers window sizes from previous runs). Also, alt-1 through alt-0 will switch between opened sounds, and alt-` will swich to the previously focused sound.