I've just got my second tivo up and running and bought the HNP.  This is all working fine.  I've renamed both Tivos - one for 'lounge' and one 'family'.  The tivos now appear on each others Now Playing List, and I can transfer between devices fine.

What is strange is that each tivo appears twice - once under 'Lounge Media Device' and again under 'Media Device'.  The same applies to the other machine where I see 'Family Media Device' and 'Media Device'.

Is that normal?  How do I get rid of the double up? 

Also what is the best free app for transfers to a Mac?  I'm just wanting something easy to use with the ability to transfer the odd recording to DVD or to my iPad.