4) (DLNA). Luckily (and thanks to a Buff poster) I found a way into Twonky and set it up. Unfortunately, crash mentioned in #1 changed my IP and when I went back to set up Twonky, only one computer is recognized.
Previous, Twonky recognized 4 different Macs without much user assistance: I knew nothing about how to use it, but it automatically recognized them.
Linkstation was given a Twonky media player and my laptops automatically a WMA player without me choosing anything. Post my 'big' crash and newest setup, only LS recognized ( IP designated is different than the one on current Mini setup! BTW,, My Mini has had 3 different IPs and NAMES for the HD due to hard resets.) No longer finds my other computers in security/config page of Twonky.