Where did you find that out? VoicePro2 installs and runs in WinXP when Win95 compatibility mode is active (in program's properties). I tested the software and looks like the files it makes are not similar to the .csf files. For adpcm (.vox) files there are better editors available, VoicePro does not even open the .csf files. For example Vox Studio opens (when file extension is changed to .vox) and playbacks the .csf files perfectly with just a little noise (because of header data) at the start. Vox Studio demo is available here: http://www.xentec.be/download/download.html