articles on Intellectual Property Rights

Songs and soundtracks.
I pay for something that makes soundtracks, it removes the vocals from the song and I am left with the song. Is it halachically permitted for me to make soundtracks for people that ask and sell it for 10 dollars? If not, can I only sell the songs that dont have a soundtrack?

money sent by mistake
they forgot to cancel my membership and the Ministry of Religious Services sent the money for my scholarship

Borrowing money from special needs son
Is there a problem in taking a loan/borrowing money from my 20 year old special needs son?










