Thank you for your quick reply, and I am sorry that I did not originally mention that the file extension is m4v. AFA Requiem, their website states that it will only work with iTunes version 8.1 or lower, so I am out of luck there being on 9.0.3. Separately I have heard that Apple TV is not very good, and don't have a lot of financial resources anyway to allocate there. The DVD approach will be more cost effective for me I think.
It appears that other than Requiem, there are no other choices for DRM removal software on the Mac side. That being the case, would
Soundtaxi be the best choice to unlock legally acquired DRM protected files on the PC side, including those with the m4v extension noted above?
Thanks again!