Opening a program instead of a file

I'm wondering if there is a way to open a program instead of a file using python, qt, or qt4 designer? For example, I would like to have a button in my GUI that when clicked, it opens a media player. Thx.

You can use QProcess to do that.

Ok, great, I will look up that function in the docs. Thank you!

For future reference for anyone else with this question, I have attached some simple code for being able to open programs:

Code:

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def process(self):
                p = QtCore.QProcess(self)
                p.setWorkingDirectory('/usr/bin/vlc') #this is where your program is located 
	        p.start('vlc') #p.start('insert program name here')

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I have another question, is there a way to embed the video within a created GUI? Instead of just opening a media player in another window?