Was able to get Slingplayer to install. Got the same issue with the password. You have to enter it with graffiti for some reason, using the onscreen keyboard gives the error about needing to be 21 characters. I was able to connect to sling box.
2 Issues:
It would crash when trying to play a video stream.
It would act like it was streaming in audio only mode but did not getting any sound.

Still trying to tweak the settings and see if anything changes.