trying to record encrypted streaming video (DRM protected Windows Media) from TFC Now

if i'm not allowed to ask this here, sorry and please delete
new to this, please help

what do u guys use to record encrypted streaming video/audio
subscribe to TFC Now on my computer
as mention above bought the subscription to TFC Now for 3-months, i just want to be able to record shows so my mom can also watch it whenever she wants - i guess this is the same as archiving or transferring file to another media (which is not illegal here)
if someone can point me to the right direction or tips on recording/archiving show will be appreciated
i will start reading in this forum to learn more
thanks in advance