Originally Posted by Newb4Life
For some reason it simply won't execute anymore.
I even downloaded a 2nd copy (and set it as executable) but it asks what I want to open it with.
Forgot to mention I am using the latest Musix
Can't give a direct answer as I'm not familiar with Musix. I'll assume you're trying to open it from the desktop (which one?) since it's asking what to open with. Have you tried to run it from command line and if so what messages were displayed? That frequently gives more information about the problem.
From where and what version of Unetbootin is this?
Supply that information and we'll try to be more helpfull.