>Will all of this long playing time cause any excessive wear to any of the moving mechanisms, or laser inside the player?
Sooner or later the unit will get some wear and I think that it's call "break-in" :). If it get damaged, and it is inside the warranty period, you can change it.
> Any chance of excessive heat build up that might damage the digital disc playing in the player for such a long period of time?
Don't think so, at least with the amount of heat generated by these units. I have never experienced this problem before.
