New computer, Iphone/Ipod syncing without losing music?

So basically I took my laptop in for repair and they installed a new operating system so everything was erased, including my itunes library. How do I sync to a new computer without losing music? I do not have copies and did not purchase the music from ITunes.

Download Sharepod from www.getsharepod.com/download…

follow the easy instructions to back up your music to your computer and to iTunes…

if you want to add new songs to your iTunes library, it will tell you that you're trying to use two iTunes libraries on the same iPod and that you'll have to erase and sync your iPod with the new iTunes library… You can now do this, as you have backed up your music back to iTunes.

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  • How to transfer my Iphone songs to my computer without losing them? Okay so the other day I get these songs from a friend on memory stick so I copy them into Itunes. Forgetting that I had to copy the files on to my computer, the files are no longer on the computer and Itunes is telling me to locate them. Luckily, I got them all on my iphone 5 before losing them so I'm wondering if there's a way to send them to the computer without losing them on the iphone as well. Like is it possible to email them to my email address or any other alternative?