I do audio editing with a Windows-based professionally oriented program called Sony Sound Forge Pro, which is very powerful, very stable, and very easy to use (and also expensive). I suspect that its consumer oriented counterpart, Sound Forge Audio Studio ($55) would do fine for your purposes:
http://www.sonycreativesoftware.com/soundforgesoftware
These programs were originally developed by a USA company called Sonic Foundry, which was bought by Sony several years ago.
Good luck!
-- Al
http://www.sonycreativesoftware.com/soundforgesoftware
These programs were originally developed by a USA company called Sonic Foundry, which was bought by Sony several years ago.
Good luck!
-- Al