Lil Wayne Nailed in Prison

Lil Wayne is up to his ears in trouble in prison -- after he was reportedly busted during an early morning search with a pair of earphones and an iPod charger ... a big no-no at Rikers Island.

Wayne -- who's serving a one-year stint for a gun charge -- will be charged with an infraction for being in possession of "music contraband," this according to the New York Daily News.

But the big mystery: officials were unable to locate the mother lode -- the actual mp3 player itself -- so the search continues ...