With the latest update to the SlingMobile software, users of the HTC (T-Mobile) Dash and the Samsung (Cingular) BlackJack can now sling their media to and fro while on-the-go. The Dash has been out for around two months, but the BlackJack has only been around for about one month, so Sling should be commended for the relatively quick turn-around time. The new software also sports some bug fixes, but we all knew those bugs were just misunderstood features anyway.
While the release of Dash and BlackJack-compatible Sling software is nice and all, there's still no sign of BlackBerry support. Not like that's a popular brand or anything. Show some hustle, Sling.