Mplayer is just a commandline , no GUI. u use SiB as it's GUI

graphic user interface..
hmm.. try reinstall the codec? :/ dunno how to solve ur prob..

app manager -> extra codec...or just type "codec"..it'll show a list of apps related to "codec"

whats the resolution of the movie? u didnt ans this yet o.o

for those  of you who were asking about installing palm SDL games ( NFSU, SIMS, LETS GOLF ), here's a quick tuto

open up Xyerm and type :

sudo gainroot

apt-get install preenv

transfer the  relevant game folder within 'applications' folder from ur palm pre to '/home/user/applications' in your n900
( create the '/home/user/applications' folder and transfer the game folders in there )

if you only have the ipk file ( similiar to the apk files for android ), unzip with 7-zip and you should have the relevant game folders you need to transfer to your n900.

next open up xterm again and type:
sudo gainroot

preenv

( or if its still open )

cd /home/user/applications/'name of game folder'.

chmod +rwx 'name of the game' (for example, need for speed would be nfsuc)

To create a desktop icon type the added line:

desktopgen appinfo.json

then just select the icon from your normal menu like a native game/app

Note 1 : For NSFU when in car purchase/car select screen, to exit have to tap the return button multiple times like a woodpecker, must be a bug due to multi-touch reqs
Note 2 : Games I've tested

- NFSU ( works perfectly)
- SIMS ( No camera rotation due to lack of multitouch)
- LETS GOLF ( Currently testing, seems fine so far )
@mashimarow

thanks for the list bro, take note though for item 47 ( installation of rootsh ) latest version requires you to type sudo gainroot

EDIT: Clarified instructions for transferring game folders/into relevant directory in n900.

confused? wanna install a game or uninstall preenv?

for those  of you who were asking about installing palm SDL games ( NFSU, SIMS, LETS GOLF ), here's a quick tuto

open up Xyerm and type :

sudo gainroot

apt-get install preenv

transfer the  relevant game folder within 'applications' folder from ur palm pre to '/home/user/applications' in your n900
( create the '/home/user/applications' folder and transfer the game folders in there )

if you only have the ipk file ( similiar to the apk files for android ), unzip with 7-zip and you should have the relevant game folders you need to transfer to your n900.

next open up xterm again and type:
sudo gainroot

preenv

( or if its still open )

cd /home/user/applications/'name of game folder'.

chmod +rwx 'name of the game' (for example, need for speed would be nfsuc)

To create a desktop icon type the added line:

desktopgen appinfo.json

then just select the icon from your normal menu like a native game/app

Note 1 : For NSFU when in car purchase/car select screen, to exit have to tap the return button multiple times like a woodpecker, must be a bug due to multi-touch reqs
Note 2 : Games I've tested

- NFSU ( works perfectly)
- SIMS ( No camera rotation due to lack of multitouch)
- LETS GOLF ( Currently testing, seems fine so far )
@mashimarow

thanks for the list bro, take note though for item 47 ( installation of rootsh ) latest version requires you to type sudo gainroot

EDIT: Clarified instructions for transferring game folders/into relevant directory in n900.

create a folder in /home/user/ called applications

u need the game data files. check ur pm. after you download it, unzip with 7-zip until you have the data.tar, unzip that and then look for the folder 'com.ea.app.nfsuc.eu.en' which should have a bunch of files in it,  copy the 'com.ea.app.nfsuc.eu.en' folder and its contents to /home/user/applications/
then if ur xterminal is still open proceed to type the commands in the tuto as above. if not open xterm again type 'sudo gainroot', enter then 'preenv' then follow the tuto above.

Screw multitouch!
The games are still very much playable with single touch input.
There are apps to unzip & unrar in repo but I'm not sure how to use them.
But I think the extraction will take a longer time.

I just mentioned that people should stop asking for the download link

For now PM porselinaheart for any "extra info"
I'll work something to make this "distribution" easier tomorrow.

no need multi-touch for NFS.

whatever algorithm their using for the multi-touch on webOS however is much more suited to our n900s for some reason. Lets Golf works great even when loading shot swing, compared to the obvious confusion the touchscreen is facing when playing Nova on nitroid, not usable at all,

The answer for your million dollar question is in frontpage.
Download the PR1.3 files from http://tablets-dev.nokia.com/nokia_N900.php.
You have to put your IMEI number
Rename the file name to R & you can proceed to flash with the frontpage way.