The wee Clip can endure the trauma of a soaking, as we’ve experienced, but the battery can indeed be discharged below its minimum threshold voltage, which could make in unrecoverable. This is the downside of the high density lithium polymer battery.
Usually, the Sansa will shut down or cease drawing current when “swimming”, and can possibly be revived later by a careful drying in air, at moderate temperatures.
Regarding that household clothes drier, this can be more deadly to the wee Sansa than the wash. The battery doesn’t fare well in the ambient temperatures encountered in that tumbler, well above the boiling point (212F / 100C) of water. This may destroy the battery, of course.
Bob 
