current sales mgr, former tech rep.
My favorite solution is www.doubletwist.com. This creates a split screen on your computer when your phone is plugged in so you can click and drag media files over to your device from your computer/iTunes account.
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You cannot get iTunes, that exact app, since that is an exclusive app for Apple. However, if you download and install DoubleTwist on your computer and phone, you can sync your music from your iTunes to your Galaxy S phone.
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