Troubled with Mac compression

[Himitsu]

I have been getting really uptight with a problem that makes my life a little inconvenient. I use a lot of container fields with that 30 sec. recorded audio. When they are recorded on my windows machines, they play on any system. However, I guess mac records it in some kind of mac compression. Anything I record on my macs, can't be played on my windows systems. Has anyone found a way to fix this? Is there some kind of codec I can add to my windows systems that will allow me to play them?