If 'mixpad' is at the site linked below, the download file is called "mpsetup.exe" so the questions are,
1)which version of windows are you planning to use it on and
2)why are you posting at a Linux forum. The name of the file clearly tells you it is windows software. If you have the wine program installed on some Linux distribution, you might be able to run it from wine.
http://mixpad.en.softonic.com/
