audio editing has not been invented last year. There were some applications that worked well some years ago (Sound DesignerII), but the PEAK and SPARK crap NEVER ever worked stable and bugfree in any version, nor did upgrade or updates....see bug fixed list. ridiculous! I guest the didn't even cover a half of the real bugs...
both apps even crash on cutting audio parts(as only action) or on saving the projects....Thank GOD at least SPARK resigned.

give DSP-QUATTRO a try! now. believe me

take care

audiogod