I've heard that the vibrations of the guitar from the strings tends to move the molecules of the wood..... settling them like shaking a container of rocks or vibrating concrete to remove the voids. I seem to recall a number of gizmos through the years that would provide that vibration into the guitar.

Exactly how effective that was, and how effective a transistor radio would be, in regards to seasoning, is kinda sketchy. Yes, wood gets seasoned with the passing of time. Does the use and the vibrations add to that? I'm pretty sure it does. But when it all gets shaken out, I think the quality of the sound comes more from the initial woods used and the quality and design of the build as opposed to some after the fact "seasoning". The percentage of difference would be barely detectable at best, assuming one was using some sort of scientific method or tool to actually quantify and measure that difference. I'd really love to see the data on that.

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