The SlingPlayer Mobile beta client Sling Media launched last month for S60-run Symbian devices has gone gold. In addition, Pocket-lint reports a new version of the software is being developed for the BlackBerry.

With SlingPlayer Mobile—already available for a number of other mobile platforms, including the Palm OS and Windows Mobile—installed on their smartphone, those with a Slingbox device attached to their television will be able view 'placeshifted' cable, satellite, or digital video recorder (DVR) content remotely anywhere in the world through a wireless broadband - 3G cellular or Wi-Fi - Internet connection on their smartphone.

In the case of a DVR, for example, users can not only watch recorded shows, but pause and rewind live TV or queue new recordings from their smartphone as well.

The new S60 version supports the Nokia E65, N75 and N95 in the U.S. For Europe, Sling Media adds the Nokia 6120 and N73.

Nokia has just released an unlocked U.S.-style 3G compatible version of the N95, called the N95-3, in this country—all the better to stream video to from a Slingbox.

As is always the case, Sling Media recommends users have an all-you-can-eat data plan for their smartphone. That's important to keep costs down for streaming content over a 3G cellular-wireless connection.

Reportedly, Sling Media is in the process of striking a deal to offer SlingPlayer Mobile for free in the U.S. It goes for $29.99 in Canada and £19.99 in the UK.

According to Pocket-lint, the upcoming BlackBerry edition of the SlingPlayer Mobile client will offer the same capabilities as it does for other wireless-device platforms.

They quote Sling Media VP of Europe Stuart Collingwood as saying, "We are working with BlackBerry to develop a software application at the moment."

In related news, a couple of days ago Dish Network's parent company EchoStar, an early investor in the company, announced it would pony up $380 million to buy Sling Media.

Through this acquisition EchoStar gives its satellite TV subsidiary access to customers when out of the house and, for many, when traveling nearly anywhere in the world. Sling Media gains in the way of resources.

The deal is expected to close by the end of the year.