1.: If you look a little bit down in the first post, you will find "Installation per Konsole OE2.5 (DreamOS)", which is for DM900 also
2.: If you click on the BIG Download-Button, you will be able to download Mediaportal. Mediainfo is an additional plugin to be able to record Mediaportal strems (an option).
Edit: Mausi was a little bit faster...
Yamp - Musicplayer mit Artist-Art-Hintergrund und "Karaoke Light"- aktuelle Version V3.3.2 hier, bitte beachten:FAQ hier
Wissen ist eins der wenigen Güter, das sich durch Teilen vermehren lässt ....
You said, you wanted IPTV. Well, MediaPortal can give you some IPTV. Apparently, this is not the IPTV you were looking for. But you still didn't tell us, what you are looking for or what's the name of your IPTV provider...
If it is illegal IPTV, then you probably won't get any support here...