zgsmplay is a curses-based realtime GSM file player with file selector. (GSM is a lossy sound compression format used for speech.) In addition to simply playing the files, zgsmplay lets you move around them, etc., and can cope with large samples. A copy of Jutta Degener and Carsten Bormann's free GSM compressor/library is included.
Re: How about some file saving support?
xzgv is a viewer, not an editor. You might want to try using Gimp, netpbm, or ImageMagick for image editing. Or if your images are generated by the camera as JPEGs, you might want to try jpegtran which can do a few simple things losslessly.