How to put music from iTunes 11 to iPhone?

With the new iTunes I have no idea how to take music I've purchased or downloaded on my iTunes library on my computer and put it on my iPhone.

Anyone know how to help me? I want to do this without syncing my iPhone to my music library on iTunes on my computer. I always used to be able to do it without syncing.

If you want to be able to transfer music to an iPhone, iPad, or iPod touch wirelessly and without syncing everything on the device with iTunes, you'll need to turn on iTunes Wi-Fi Sync.

In order to add a song to an iPhone (iPod, etc) wirelessly and without syncing the entire device, you have to enable a feature that suggests kind of the opposite. This is very easy to do, but surprisingly, wi-fi syncing is disabled by default. We'll walk you through turning the feature on and then showing you how to copy a song over to an iOS device wirelessly, without syncing everything else which as we all know can take forever.

open this link below for detail steps

*Option 1
1. Connect iPhone
2. Open iTunes (if not automatically)
3. Click on iPhone button at the right
4.in the "Summary tab, press "Manually manage music and videos"
5. Sync
6. Press "On this iPhone" tab
7. Drag and drop into music
*Option 2 (aka as it was once)
1-5.same
6.press Ctrl+S
7. Select Music inside Devices->%Your Device Name%
8. Drag and drop into music