Can i copy a song from my computer to my iphone without wiping existing library?

I have an iphone with a library of music on already, my friend has lots of newer songs that i would like. By using itunes i have to wipe my existing library and i just want to add a few songs without doing so. Is there an easy to do application to do this yet?

Follow the steps given here on Apple support communities to get your iPhone synced to another computer without data loss…

https://discussions.apple.com/...s/DOC-3141

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