Steps to install mpd on the fonera & remote (in this case an Android phone)

MPD
- open SSH on the fonera. In Ubuntu, you can open a terminal and type: ssh root@192.138.10.1 , type your password and you are  in. Only thing that needs to be done is to start the deamon by typing: mpd. On a Windows machine, you need a tool like Putty to create SSH acces.

- Starting the deamon will build a database (mpd.db) of all music on your attached harddrive. So yes, put some music on your attached HD.

Remote
On the Android phone
- Please go to the market and add MPDroid or Droid MPD (free apps).

- Go to the settings and add your fonera (typically 192.168.10.1). Now you should be able to create a playlist and play your music :-)

Please note that:
- in case you want to stream shoutcast or other radio, you need to do some extra installation steps, see below. 
- this installation is just a proof of the concept; after a reboot of the fonera, it is necessaty you restart mpd again.

Main concern is the size of the plugin. In my setup, I pointed some scripts and the database to my HD, as the internal memory was not big enough. 

Radiostreams and MPC
If you want to have streams, you can do the following:

Leave the music plugin installed and download the file 'mpd15-8.tar.gz' to your USB drive and then via ssh run the following (change hdd for the name of your drive). 

cd /tmp/mounts/hdd
tar zvxf mpd15-8.tar.gz
cd mpd
cp mpc /usr/bin
killall mpd
./start.sh

You may also want to edit the config before running ./start.sh

If you want to listen to a stream, you can try the following example as I did:

SSH to the router and type: 

mpc clear
mpc add http://shoutcast2.omroep.nl:8100
mpc save "Radio 1"

You now can listen to (dutch) radio.