Reply to DDJ-T1 possible to sync with APC40???

I have an Apc40 and the T1 also with the programs Ableton Live 8.2.2 and Traktor Pro 2.0.3.

My gear the APC40, T1 and my Windows computer.
I don't have an audio interface...do i need one?

I have see youtube videos of it. They are all in Mac OS, and none use neither of the controllers (APC nor T1), just the the programs.

I have run into a problem in Ableton when i try to switch my output to my ddj while tractor is on and says "Failed to open DDJ-T1 Line" are there any drivers that will help me combine MIDI controllers together?
If so which one?

My first question is is it even possible to sync both programs in Windows.
And is it possible while using both controllers (since they do have built-in sound cards) at the same time using the sync feature? If so how?

I really hope i can make them work together...
Any help will be appreciated
Thanks!!