Hi All, I just bought this player (NW-S706F) and I'm really pleased with it, except for one thing that's nagging me, the headphone jack on the player itself seems a little loose. I'm not sure if this is intentional or if I've got a faulty unit. Everything works fine, it's just that the when you insert the headphone plug into the unit, there's a degree of flex to it, I had a NW-HD5 before this and the headphone jack was rock solid, the plug didn't move at all. I'd appreciate any input on this from those who own the player. Thanks.