The buzz you heard at the video stores late last month was a low, guttural ''mmmm-hmmm,'' as Billy Bob Thornton's Sling Blade cut a path to No. 4 its first week on tape. Maybe that's because, on average, stores carried six copies of the Southern gothic fable but only four each of the week's other big debuts, Johnny Depp's Donnie Brasco and Howard Stern's Private Parts. The real comer, however, was Fools Rush In, starring Matthew Perry and Salma Hayek, which jumped four spots its second week. At 5.8 turns per copy, Fools was rushing in and out of stores.

TOP 10 TAPE RENTALS

LAST WEEK WEEKS ON CHART

1 1 SCREAM Neve Campbell, Dimension 5 2 2 ABSOLUTE POWER Clint Eastwood, Warner 3 3 3 METRO Eddie Murphy, Touchstone 2 4 -- SLING BLADE Billy Bob Thornton, Miramax 1 5 5 MICHAEL John Travolta, Warner 7 6 7 VEGAS vacation Chevy Chase, Warner 3 7 -- DONNIE BRASCO Johnny Depp, Columbia TriStar 1 8 12 FOOLS RUSH IN Matthew Perry, Columbia TriStar 2 9 8 RANSOM Mel Gibson, Touchstone 11 10 -- PRIVATE PARTS Howard Stern, Paramount 1

TAPE SALES

1 1 FUN & FANCY FREE Animated, Walt Disney, $26.99 2 2 5 THE ROCK Nicolas Cage, Hollywood, $19.99 9 3 8 HAPPY GILMORE Adam Sandler, Universal, $14.98 9 4 4 JERRY MAGUIRE Tom Cruise, Columbia TriStar, $24.99 9 5 6 DETROIT REDWINGS 1996-97 NHL STANLEY CUP CHAMPIONSHIP CBS/Fox, $19.98 2 6 2 TURBO: A POWER RANGERS MOVIE Jason David Frank, FoxVideo, $19.98 3 7 -- RUDYARD KIPLING'S THE SECOND JUNGLE BOOK: MOWGLI AND BALOO Bill Campbell, Columbia TriStar, $15.95 1 8 7 RUGRATS: A RUGRATS VACATION Animated, Paramount, $12.95 3 9 3 PRETTY WOMAN Julia Roberts, Touchstone, $9.99 72 10 12 GREASE John Travolta, Paramount, $14.95 46

SPORTS TAPE SALES

2 WEEKS AGO

1 2 TIGER WOODS: SON, HERO & CHAMPION CBS, $14.98 5 2 1 MICHAEL JORDAN: ABOVE & BEYOND CBS/Fox, $14.98 63 3 3 NBA AT 50 CBS/Fox, $19.98 23 4 5 THIS WEEK IN BASEBALL: 20 YEARS OF UNFORGETTABLE Plays & bloopers Orion, $14.98 35 5 7 MICHAEL JORDAN: COME FLY WITH ME CBS/Fox, $19.98 382 6 6 MICHAEL JORDAN: AIR TIME CBS/Fox, $19.98 213 7 9 MIKE TYSON: THE INSIDE STORY MPI, $19.98 79 8 8 MICHAEL JORDAN: THE ULTIMATE COLLECTION CBS/Fox, $29.98 25 9 4 MUHAMMAD ALI: THE WHOLE STORY Warner, $109.98 7 10 10 MICHAEL JORDAN'S PLAYGROUND CBS/Fox, $19.98 287

SOURCE: VIDEO BUSINESS FOR THE WEEK ENDING JUNE 27, 1997 SPORTS DATA:BILLBOARD FROM THE ISSUE DATED AUG. 2, 1997