I know RB allows you to have the screen upside down, but is there any way (custom theme perhaps?) to have it rotated by 90/270 degrees?
About what you ask of using a theme for this, as probably the last option, and only as a partial - and a very uncomfortable - solution, I think it might possible, but here's how it would be:
- Icon displaying wouldn't have any problems (playing status, repeat, shuffle, etc)
- Progress bar would be seen as "vertical"
- If a 90 degrees rotated font would be created (it's possible by rotating each character in the .fnt file), text could be displayed/seen to be read vertically
- And of course, probably the worst part would be that anything outside the WPS would keep the original orientation (menus, browsing...)