Need advice on front axles and drivetrain

Loose steering on interstste and drivetrain movement starting and stopping. This is a video of the front inner axles slop.
http://www.youtube.com/watch?v=oDyYjxYVXn4
Both sides are equally loose and sloppy. Not sure what parts need to be replaced. Please advise thanks.

 

Pretty sure thats within normal range.. As long as the seal isn't leaking you should be fine. Mine have play like that and i replaced the front diff last year. How many miles? lots of things can contribute to wandering on the highway, loose ball joints, rack and pinion wear, steering shaft slip joint, tie rod ends, control arm bushings, alignment. List some specific things your truck is doing

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