Planned: ClipSpeak 1.5
The next version of ClipSpeak, namely ClipSpeak 1.5, will feature two quite important improvements. One of them is SAPI4 support, which will allow you to select the voices you might not be able to right now with 1.0. The other feature is the Save to MP3 function, which I think will be a very neat feature to have.
As usual, if you have suggestions, head over to the CodePlex page!
