Fast forwarding or rewinding song in app

[sharhelia]

Hi,

i am creating an app in which i am playing a song, So far i am able to play pause and stop the song using AVFoundation.framework calling [player play],..... and so methods. i want to add a slider or buttons to fast forward or rewind the song, i have no idea how to do that, kindly if anyone have any idea please share , if there is some tutorial or code it ll be great help.

happy programming..