There's no way this can be DRM, iTunes quite doing that years ago. Where do you have iTunes set to store music? In the iTunes preferences pane select advance and it will tell you the file path there. When you buy a song from Beatport, where does it go? Check in Traktor preferences where it's set to pull music from. In iTunes you can convert it to an mp3 with absolutely no DRM, by right clicking and selecting convert to mp3. Check that 320k mp3 is selected in import options in iTunes.
