AudioTX Communicator will work fine with Windows 7 - the 32 bits version as well as the 64 bits version.

Please note that you may need to check with the manufacturers of the hardware in your PC to see if they provide 64 bits drivers if you go that route. A lot of the 32 bits XP drivers will work fine in Windows 7 32 bits, but for the 64 bits version you will need 64 bits drivers as 32 bits drivers are not supported by the 64 bits version of Windows 7.