One-time grunge rockers Pearl Jam left their record label earlier this year, unsure about how they would continue distributing their music. But the fan-friendly group needed only a few months to come up with a solution: Pearl Jam is now offering preorders of their most recent CD single, "Man of the Hour," through its Web site ( http://www.pearljam.com ). The single costs $5 and will be shipped by the end of November, the band said. Sales are strong, too: "Man of the Hour" has already sold more than 4800 units--not bad when you consider that last week's top-selling retail CD single sold about 7000 units. Users of Apple Computer's iTunes service can download the single for 99 cents.