The wiring for the two modules should look like this:
As you can TX and RX of the Mini and the USB2Serial module are cross-wired. Also, there is a 100nF capacitor wired between the EXT-Reset Pin of the USB2Serial and the RESET-Pin of the Mini. I highly recommend that because the Mini 04 is very picky about the timing of the reset before uploading a new sketch. While connecting RESET like that will enable you to easily upload new sketches, it might create some problems when your sketch needs to receive any kind of data on startup via USB (read about this problem here).
After the wiring the next problem appears: The arduino ide offers a configuration for the Board "Arduino Mini", which is unfortunatly only for the Mini 03 with an ATMega168. So, for a Mini 04 set the Board config to "Arduino Pro or Pro Mini (5V, 16MHz) w/ ATMEGA328".
That should be it.
, 
and 
have) or hooked up to the TV in form of a streaming box (
, 
) or a gaming console, like the 
. So in many cases it is safe to assume that your multimedia equipment and your computers can communicate with each other via LAN or WIFI. Since you can't run a SopCast client directly on your DLNA-Clients you need to run it on a computer and stream the content using