[NJARC] What kind of sound system would you recommend to "take with me"

[Billoradio at aol.com]

I am looking for a near field listening system to take with me. It must  
operate on low current even though it would be fun to have a sub woofer the  shake 
the ground above.  
For a power source I would request solar cells on the gravestone with large  
caps for storage.  
What source material would you recommend, a small antenna built in to the  
stone with an FM tuner below? If FM as we know it was discontinued that would be 
 a problem. What if the preset station went to 24-7 rap music? They would 
have to  dig me up to change the station?  
How could the music be stored on a chip and what songs would you suggest?  
Stairway To Heaven?  
If this would not work, how would a car radio hold up in a head stone?  
It might be good insurance to play ELEVATOR music just in case, all UP  beat 
of course.  
Thank you (well in advance I hope) for your assistance. 
Bill (me later)