Rugaby's suggestion will work. Another one is to use an app that lets you copy stuff directly from a computer to the phone. It will go in whichever app you use, rather than the stock music app, but you can transfer it to iTunes on your computer when you get home and sync it and then it will be in the music app. Until then, you can play it from that app you used.
Thanks it's actually my wife's computer I just didn't want her email and school info on my phone also some of the music I put on her phone was added from CDs but it was all Purchased by me so no it's not theft but thanks Europa thanks
Rugabi I guess I should have mentioned we share an iTunes account