Instructions
Select "Features" from the "NBA 2K11" main menu.
Select "2K Beats" from the Features menu, then "2K Beats Playlist."
Highlight a song in the list and press the "X" button to remove it from the playlist. Press "X" while highlighting a disabled song to add it to the playlist.
Continue enabling and disabling songs within the playlist until you have created your desired custom list of songs. Press the "Start" button to save the playlist and exit the 2K Beats screen. You will unlock the "Hey Mr. DJ" trophy after returning to the main menu.