How to put music on my iphone from other people's computers?

I can't transfer music onto my iphone except from my own computer. I have the setting "manually manage" music set on my phone on my computer, but when I go to another computer the setting is off. I don't know why. So it's preventing me from putting music onto my iphone. Please help, I asked this question already and they said "it works bro" and that did not help at all.

"I can't transfer music onto my iphone except from my own computer. "

I don't understand why you think you could. Apple sells iPhones and music that goes on them. Obviously they designed it this way because they know they'd sell fewer songs on iTunes if people could easily do what you're trying to do - connect an iPhone to any other computer and copy from it, This has been a basic feature of iPods and similar devices for years - yet so many iPhone owners just don;t get it.

Here's an idea - have ypu tried copying the music files from the other computer using a flash drive? You should then be able to copy those files to your computer from that and into your iTunes.

RTY IPHONE TRANSFER PLATINUM. It can help you.