This software is basically the same thing as Audacity with a couple extra capabilities...
"NETIA offers Snippet LE (Light Edition) 8, the new free version of its Radio-Assist 8 production tool, especially designed for journalistic editing work. The Snippet tool is a user-friendly way to complete simple or complex audio edit work."
http://www.netia.com/index.php/en/company/press-kit/free-audio-editing-software-mp3-wav
The expression "non-linear editing" grew, I think, out of the magical ability of digital editing of video material to be done "out of chronological order."
Back when analog video tape editing was done directly at the tape level, the process had to follow a time sequence wherein a change to some spot right in the middle of the tape as very hard to "pull off," so to speak.
So far as I know my recording service began experimenting with non-linear digital audio editing before anyone I knew of in the commercial business. It was about 1990, the software was DSS8+ from GVP (Great Valley Products), an 8-bit program for the Commodore Amiga A3000. The hardware was a parallel port A/D converter with RCA stereo inputs.
8-bit audio is hard on the ears, but I produced a few videotape soundtracks for productions that didn't need precise lip-sync.
The PC was still very primitive at that stage.
There's more to the history, but here we are today in 2014 and I can't turn down software like Rich Powers has brought to attention.
There's no time for all this fun!