Audio Thunder by Asimware Innovations Inc, allows you to import and export any of the following audio formats: Compact Disc Digital Audio, MAUD, AIFF, WAV, Amiga 8-bit 8SVX, NewTek Flyer Audio Clips and Sunrise Studio 16.
Audio Thunder is great. It's a GUI program, and probably has Arexx support for batch processing, but sox will do the job.
