Here is the fastest way to edit audio files! Free Audio Dub is the free audio editing software that lets you delete unwanted parts from audio files without re-encoding.
And "without re-encoding" means without losing original quality! This is a lossless conversion, which is very fast. This application will support many audio formats, such as MP3, WAV, AAC, AC3, M4A, MP2, OGG, WMA .