I bought a third party USB charger for my Shuffle (didn't feel like spending $30+ on Apple's version-- besides, it got good reviews on Amazon). You plug the shuffle into it and it plugs directly inot the wall.

Anyway, when I plug the Shuffle into it, the light blinks green constantly, instead of the usual (non-blinking) amber light that is supposed to indicate the battery is charging.

Any idea what's happening?

I thought it was on pause or something but that's not the case. I have no idea what it's doing!