Word on the street is that Sling Media is about to start a public beta for the Sling Player Mobile for BlackBerry client.
We aren’t exactly sure when the beta will be available. It is “still a ways off” according to the Sling Community forum. You can, however, register for the Sling Media beta program by filling out a bunch of information here.
It’s been a while since I’ve actually bought an application for my BlackBerry but I can tell you that I will gladly shell out the 30 bucks when this one ships.