First of all: I can’t give real support for this just because I just don’t have the time. I will try to update it as fast as I can, but it won’t be as quick as the Subsonic or ownCloud package.
So what is it all about?
Serviio is a pretty neat dlna streaming server written by Petr Nejedly (Zip). In February 2011 patters got it running on Synology Disk Stations (his packages taught me how to build my own). At first he didn’t include an interface in his package which wasn’t really a problem because there is a full access remote console available. Then he integrated the PHP web console whis is basically just a bunch of files. Then he began to include the full java-based console and even got it working in one jvm with the server application. Sadly but comprehensible he excluded the console from his packages since version 1.0 because it is just to much work to do for getting the same results you can have by installing the remote console.
But as I am operating my DS from a multitude of devices a build-in console is the simplest solution for me. So I was looking for an easy way to get a console running on my DS and found Marks (mpemberton5s) PHP Web Ui at the serviio Forum, ask him for a permission to puplish it and here it is. 
Sadly I can’t get it to work in an iframe window inside DSM (the icon is clickable but nothing happens. Bug?). Now it opens a new Tab, looks a bit stretched on my 16:9 screen, but works fine.
How do I use this?
First of all you have to install patters serviio package carefully and follow the first five steps in instructions. You don’t have to install serviio on your local computer, thats what this package is for.
To install the console package add http://update.10trum.de/packageupdate/getpackages.php to your 3rd party sources like the one you added from patters to install serviio.
After installing serviio and this serviio console read patters notes carefully!
Now you are good to go.
Screen shot:
