As long as you are logged in as your iTunes user on the phone you can just go into the AppStore on your phone and re-download anything you've already purchased.
In fact, if you click on the Updates tab of the AppStore App there is a link at the top that says Purchased, this will link to all the apps you've already bought.
There is also a Purchased tab at the bottom of the iTunes App showing all the songs you've purchased.
Edited by Dr-Strangelove at 11:43:30 12-09-2012
#8998874, By Dr-Strangelove The "I've got an iPhone" thread
Dr-Strangelove 2,162 posts
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