So far, I've been able to ferret out how many G's of shock a device can take in operating and non-operating modes. It varies around 10 to 40Gs. The 10G is a little low and is not about damage but that the player will not play at 10G vibrations. But if you are being hit with 10G shocks, then you wouldn't live long.
At 40G, that's much like a drop from tabletop to concrete. Most will survice a few, but keep it up and it will break.
If you have such dropsie syndrome, they you will want to go solid state or add some bungie cord. No maker today will warrant against abuse. In fact, the trend to 90 day warranties are very likely due to not only getting the price down, but stepping back from drop damage.
Do HD players survive accicental knocks and drops? (first of several questions I'd like to ask this forum)