Following homophobic and xenophobic comments from Atlanta Brave John Rocker, lawyers for the '80s metal band Twisted Sister have asked the Braves to stop using the band's song "I Wanna Rock" as the relief pitcher's introduction when he enters games from the bullpen . . .

Bankrupt R&B singer Ronald Isley has agreed to sell his assets to a music financier, but the deal hit an obstacle last week when a judge refused to sign off on it. The judge noted objections to the agreement from several parties, including singer Michael Bolton, who may be planning a competing bid for Isley's assets. She ordered the parties back to court next month . . .

Moby, the techno great whose songs have appeared in more films lately than even Fatboy Slim, has signed on to contribute music to offbeat director John Waters's next project, "Cecil B. Demented" . . .

311 will contribute a cover of Wu-Tang Clan's "Method Man" track on a coming compilation called "Loud Rocks," a tribute to the Loud Records roster. Incubus and Everlast also offer tunes, while other names being considered for involvement are Ozzy Osbourne, Rage Against the Machine and Limp Bizkit. The album is likely due in summer . . .

The Dave Matthews Band is reportedly in the studio working on a follow-up to "Before These Crowded Streets" . . .

And the latest street date for "Two Against Nature," the first all-new Steely Dan album since the 1980s "Gaucho," is Feb. 29. . .