Playback controls in iTunes for mac

Hi all, just a quick question re iTunes and mac. I'm just wondering how to forward/rewind a song/movie/tv show while it is playing. I can seem to jump to the next track, but not change the position of the currently playing track. I can't seem to find this information anywhere on Google. Any help would be greatly appreciated. Many thanks :)

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#1 ITunes Playback Controls

To move forwards or back within a track that is playing in iTunes, use Commanf-Option-Right or Left Arrow. You can find a list of the Keyboard Shortcuts for iTunes 11 on the Mac in the Apple Knowledgebase article, "iTunes 11 for Mac: Keyboard Shortcuts": 

http://support.apple.com/kb/PH12110