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				Boston Digital BA735 speakers
			 
			 
			
		
		
		I have these speakers and a whatchamacallit base box in the middle that yurn on when powered up, but have never transmitted any sound from my computor, which is where I am using them.  I have had them for years.  Never cared to hear anything sound-wise coming from the computor until now.  They appear to be attached properly.  Plugged in, power light comes on, but no voice sound when watching a video except from the flat screen speakers.  What do I need to do? 
		
		
		
		
		
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