Former Yahoo COO and current Quadrangle Group partner Dan Rosensweig (pictured here) will take over as CEO and president of Activision Blizzard’s powerful Guitar Hero franchise, according to sources close to the situation.

Rosensweig will run the hot gaming company’s division, which is located in Silicon Valley, the result of its purchase of RedOctane in 2006, source said.

He is well known to Activision (ATVI) Chairman and CEO Bobby Kotick, who served on the Yahoo board for many years when Rosensweig was a key exec there. Both Rosensweig and Kotick have since left Yahoo.

It’s an interesting move for Rosensweig, who has been working in private equity since his departure from Yahoo (YHOO) in late 2006.

His name has been bandied about for several high-profile Web positions of late, and many thought he might take a political job, given that he was one of many digital execs involved in helping elect President Barack Obama.

But the weak market for investments and Rosensweig’s longtime experience and interest in eventually returning to operations–along with his well-known passion for music–are the likeliest motivators for the move to Guitar Hero.

Sources said Rosensweig will start his new job at Guitar Hero–which Activision could announce as early as tomorrow–in several weeks.

Running a major consumer brand like Guitar Hero seems tailor-made for Rosensweig, who worked at CNET Networks and Ziff-Davis before Yahoo. In addition, the jovial exec is well-respected in Silicon Valley, giving Activision a much more prominent presence here.

And the energetic Kotick (pictured below with me and, yes, Paula Abdul of “American Idol”–don’t ask) has long talked about turbocharging the largely retail Guitar Hero business online, as a way to further grow the music phenom.

User-generated music, as well as a plethora of online transactions and social networking, have been promising new revenue opportunities, Kotick has said.

(See video highlights of my interview with Kotick below on that topic and more at last year’s D: All Things Digital conference.)

Overall, despite the weak economy and a cautious forecast going forward, the Santa Monica, Calif.-based Activision is growing, with revenues up in the last quarter, due in large part to the popularity of its Guitar Hero and Call of Duty videogames.

Its fast pace, in contrast to rival Electronic Arts (ERTS), has been helped by its merger with Vivendi SA’s Blizzard Entertainment last summer. Blizzard’s World of Warcraft online game is also one of the most popular multiplayer games in the world.

Here’s a highlights video from my interview with Kotick at D6:

But–as many readers have requested–they will all be available in their entirety in this column.

Here’s an interview I did with Activision Chairman and CEO Bobby Kotick about the state of the gaming business.

The video of the interview is in three parts.

It’s a good week to focus on the gaming industry since Electronic Arts (ERTS) abandoned its hostile acquisition bid for Take-Two Interactive (TTWO) over the weekend.

EA’s effort was motivated, in part, by Activision’s recent merger with Vivendi Games, which includes Blizzard Entertainment’s “World of Warcraft,” one the most popular multi-player games.

The merger has made Activision (ATVI), with its own well-known franchises–especially the hugely popular “Guitar Hero,” which debuted version IV at D6–one of the gaming industry’s largest companies.

In this third video, Kotick publicly demos “Guitar Hero IV” for the first time, with the help of special guest stars Paula Abdul of “American Idol” and skateboarding star Tony Hawk.

But–as many readers have requested–they will all be available in their entirety in this column.

Here’s an interview I did with Activision Chairman and CEO Bobby Kotick about the state of the gaming business.

The video of the interview is in three parts.

It’s a good week to focus on the gaming industry since Electronic Arts (ERTS) abandoned its hostile acquisition bid for Take-Two Interactive (TTWO) over the weekend.

EA’s effort was motivated, in part, by Activision’s recent merger with Vivendi Games, which includes Blizzard Entertainment’s “World of Warcraft,” one the most popular multi-player games.

The merger has made Activision (AVTI), with its own well-known franchises–especially the hugely popular “Guitar Hero,” which debuted version IV at D6–one of the gaming industry’s largest companies.

In this second video, Kotick talks about virtual goods and in-game advertising, the international market, set-top boxes, violence and “Grand Theft Auto,” the competitiveness of the gaming business, the situation at Yahoo (he was, until recently, a board member), and takes a question from the audience about social gaming.

But–as many readers have requested–they will all be available in their entirety in this column.

Here’s an interview I did with Activision Chairman and CEO Bobby Kotick about the state of the gaming business.

The video of the interview is in three parts.

It’s a good week to focus on the gaming industry since Electronic Arts (ERTS) abandoned its hostile acquisition bid for Take-Two Interactive (TTWO) over the weekend.

EA’s effort was motivated, in part, by Activision’s recent merger with Vivendi Games, which includes Blizzard Entertainment’s “World of Warcraft,” one the most popular multi-player games.

The merger has made Activision (AVTI), with its own well-known franchises–especially the hugely popular “Guitar Hero,” which debuted version IV at D6–one of the gaming industry’s largest companies.

In this first video, Kotick talks about the merger with Vivendi–which aims to inject social gaming DNA into Activision–the popularity of Nintendo’s Wii and Microsoft’s Xbox; better graphical, storytelling and character development in games; gaming on social networks; business models in the industry; and the EA attempt to acquire Take-Two.

During an interview yesterday, he even got a few good ones off about the funny foibles of Activision, the gaming company he runs, even though it has suddenly become a much more serious business after a recent merger with Vivendi Universal’s gaming division.

Here’s a video chat with Kotick, who also serves on the board of Yahoo, which I made after we had lunch at–like I said, he’s funny–Google’s cafeteria (and, of course, he also gets a good one in about Electronic Arts’ competitive Rock Band game at the end):

Activision, which makes the popular Guitar Hero video game series (its Guitar Hero III is expected to be one of the best-selling this holiday season), has vaunted itself to be about equal in size to EA, the longtime dominant video game company.

Perhaps most importantly for Activision, the move puts the business squarely into the Web space. Vivendi’s Blizzard Entertainment unit makes the hugely popular World of Warcraft multiplayer game, where users compete on the Internet.

Kotick will be CEO of the merged company, even though Vivendi will get a 52% stake. It will be called Activision Blizzard with combined revenues of $3.7 billion.

But even together, the pair face the challenge of churning out more hits and keeping their franchises fresh.