kelvinbear, I do not recommend you using someone elses firmware to theme your player. If it is not compatible with your player it could leave your player unusable. The safest way to theme your player is to change the images in your own firmware. The process can be a little time consuming but is not to difficult,
Here are the resources you need
s1fwx to extract the firmware from your player.
http://www.mympxplayer.com/dload.php...le&file_id=136
Guide to using s1fwx
http://www.mympxplayer.com/viewtopic.php?t=66
s1res to edit your firmware
http://www.mympxplayer.com/dload.php...ile&file_id=16
Guide to using s1res
http://www.mympxplayer.com/viewtopic.php?t=206
Themes
http://www.mympxplayer.com/dload.php...gory&cat_id=25
Hope this helps.