Still, there could be several issues. Even with software products.
For example, you could use a product like Microsoft Producer to encode, edit and produce your home videos without problem. However, if you put background music on the completed project and sell it you would be in violation of copyright laws.
If you use a software product to copy protected content such as a DVD (unless you are the owner of the DVD) then you could be held in violation of federal anti-pirating laws and copyright (unless you do so for legitimate backup)...
If you use Kaaza to download music from the internet then you are in violation of copyright laws.
yada, yada, yada...
see, we need the specific situation and software before being able to give a legitimate answer.