Threading timer crashes my App

[metulburr]

PS: future-proofing: have you checked that you can use pygame and pyqt4 in the same application without getting conflicts?

First of all...Your asking for trouble when you mix two GUI libraries. Im not sure specifically about pyqt4 mixed with pygame though. Like I know that pygame and tkinter dont work well together.
Second of all why are you using two libraries? Your using pygame's mixer but pyqt4 GUI for the button. Why not just use pygame for both?