With RockN Audio Tweaker you can:

Open, create, edit and save audio files
Display a wave form window of an audio file and apply zooming
Play an audio file or any part of it
Record new audio file from a microphone or any sound card supported input device including speaker output
Visually edit an audio file (Cut, Copy, Delete Silence, Paste, Paste From File, Mix, Mix From File)
Apply different effects - Amplify, Delay, Equalizer, Fade, Flanger, Invert, Normalize, Reverse, Silence, Stretch, Vibrato, Echo, Insert silence in an audio file,etc...
Apply different filters to the selected part of an audio file (BandPassFilter, FFTFilter, HighPassFilter, HighShelfFilter, LowPassFilter, LowShelfFilter, NotchFilter)
Convert an audio file from one format to another
Insert and change information about an audio file (Album, Artist, Channels, Comments, Copyright, Genre, Title, Year)
Load an audio CD track (.cda file) and convert to an MP3 file. Rip CD to MP3 files.
Convert any supported audio file to different format - i.e. convert a wav file to mp3, convert a CD track to a mp3 file, etc.
Edit/ split full album MP3 files into separate MP3 song files easily or combine MP3 files to create albums.
Record from any supported device and save as any file format supported.
Convert frequency, channels of any supported audio file.
Record a cassette tape ( via the line-in of the sound card ) then split into separate mp3 song files. Burn on a CD as an audio CD.
Record "books on cassette" then convert to MP3 file and burn on a CD as audio.
Record via the microphone or speaker output then save in any supported file format.
Record INTERNET radio talk shows or music.
MP3 chopper! Split an MP3 album or large file into songs or sections automatically