Can I make a program combine 2 (or more) powerpoint.pptx?
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Is there an easy way to do this?  Does anyone have a library that will automatically combine two powerpoints if you give it the path name?

I have followed [Microsoft's tutorial][1] on how to do this using C#, but it will not work for powerpoints with more than a single slide for me.  

I am most comfortable with Java, Python, and C# - but I can probably learn what I need about another language if it is easier to do that. 

[1]:http://openxmldeveloper.org/blog/b/openxmldeveloper/archive/2011/01/28/110420.aspx