Its been replaced with page buddy.
Settings > display and then enable page buddy.
It will add a new home screen panel when earphones are connected. Containing Widgets to do with audio and video
http://m.tomshardware.com/news/Samsu...ite,19649.html
Quote:
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The upgrade, previously announced for the firm's Galaxy Note 10.1 tablet, introduces Page Buddy, a feature that predicts what the users wish to do based on their actions. For example, if one were to plug in headphones, the software will load the music player.
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