I would suggest using dbPowerAmp. It is a freeware application that can encode and decode virtually all formats. You could then encoe to a better quality format such as WMA or even OGG, then decode back to wave using the same program once you get where you are going. However, even the best codec around loses some quality during compression, so the wave may sound slightly different than the original after all the conversions. If you need to play wave format, I would pick up a cheap 1GB or less flash drive and just leave it as wave to begin with.

-Sephiroth