While there's no native Version of CombiWave for OSX in sight the software can be run using CodeWeavers CrossOver Office or WINE.
CombiWave 4.0 received the "Gold Medal" in CodeWeavers' compatiblilty database:
"The Gold is awarded to applications that install and run as you would expect them to in Microsoft Windows."
However, please note that running CombiWave using WINE/CrossOver is not supported officially.