From Chenpro Systems:
Wave Shredder is a WAV / MP3 file-splitting and format-conversion utility. It splits WAV / MP3 files, no matter what compression is deployed. You may wish to split a WAV / MP3 file from any point of time or split the whole audio file into number of files of your choice. Wave Shredder also features an overlap control mechanism such that consecutive files overlap each other for specified time duration. In addition to these features, Wave Shredder can convert WAV and MP3 files to each other. Furthermore, it can convert WAV files to different encoding formats (like 16 bit, 8 bit). It can also extract the left and right channels of a WAV file into a separate WAV file.