Hi, Version 4.0 is a new release of TWPSK. The major change in this version is that it is written to work with the Linux pulse audio sound server. Additional changes are listed in the ChangeLog file. The source code for TWPSK can be found at the web site below. All comment and reports are always welcome. -- 73 Ted W - wa0eir http://wa0eir.ham.org There are 10 types of people in this world: those who understand binary, and those who don't.