There's a new Sling Player for Windows Mobile. Check it out here:
http://wmpoweruser.com/?p=12506
Supposedly it supports the Touch Pro 2. It already worked with it before, but now the Touch Pro 2 is listed as an officially supported device.
New features include (copy and pasted):
Unrestricted streaming on 3G and WiFi networks
Support for multiple viewing modes including wide-screen and zoom formats
Icon based interface that eliminates the need to use a stylus
Improved program guide and DVR interfaces
Sling Account support
I haven't tried it yet, but it looks nice.
EDIT:
Since they make you jump through hoops to get a cab, I'm attaching it.
EDIT 2: Some people don't like it. If you don't like it, voice your concerns here:
http://www.slingcommunity.com/forums...cketPC/threads