The battle over Kurt Cobain's "Guitar Hero 5" avatar wages on with his former Nirvana band mates now weighing in.  

To catch you up to speed, game manufacturer Activision included Cobain in the latest rendition. At first, Cobain's widow, Courtney Love, protested that Activision had not received permission to use Cobain's likeness. Activision told TMZ that it had, indeed, legally obtained all rights necessary to feature Cobain's avatar.

But the plot thickens.

Today, Love's attorney allowed that Love did sign off on permission to use Cobain's image to TMZ, but now says the Love's upset about the song choices.  Her lawyer, who is unnamed in the TMZ story, says, "Activision is exploiting Kurt's image in a manner anathema to the very essence of his music, spirit and essence...I along with Ms. Cobain hope those who love Kurt's music strongly voice their sentiments to Activision and demand his image not be debased by singing the songs of Bon Jovi."

Now, Billboard is reporting that Nirvana drummer Dave Grohl and bassist Krist Novoselic are appealing to Activision that Cobain's avatar be used only with Nirvana's two featured songs, "Smells Like Teen Spirit" and "Lithium" and not on the game's 83 additional songs.

Of course, Love has been tweeting about the situation. Here's one of her tweets, posted late Thursday night. We didn't correct the punctuation: "I'm really grossed out that the people who forced me to do a 'deal memo:' with these assholes at Activision would lie well wait for my esq." In a tweet from earlier yesterday, she writes, "I told [Guitar Hero] their avatar was a joke."