The red-hot "Miami Vice" sound track broke into the Top 10 last week at No. 7, the first TV sound track album to do so since Henry Mancini's "Music From 'Mr. Lucky' " in 1960. Only four other television shows have yielded Top 10 albums: Richard Rodgers' "Victory at Sea" in 1958 (and its sequel in 1961); two other Mancini efforts, "Music From 'Peter Gunn' " and "More Music From 'Peter Gunn' " (both in 1959) and "77 Sunset Strip," by Mack David and Jerry Livingston (also 1959). The fourth show was "All in the Family," whose comedy excerpts went Top 10 in 1972.

Less than three weeks after its release, "Miami Vice" has sold 1.6 million copies and, according to an MCA executive, sales are increasing "pyramidically." The album's quick entry into the Top 10 reflects the kind of action usually reserved for superstar products and is surprising only because three songs -- by Tina Turner, Phil Collins and Glenn Frey -- already are available on their recent platinum albums.

"Miami Vice" is not doing badly on the singles chart either, with Jan Hammer's super-energized "Theme" holding down the No. 4 spot and Frey's "You Belong to the City" at No. 10 this week. Appropriately, the album and singles are all "with a bullet," indicating an especially large gain in sales and air play for the week. The last No. 1 television theme songs were both in 1976: John Sebastian's "Welcome Back" from "Welcome Back, Kotter" and Rhythm Heritage's "Theme From 'S.W.A.T.' " Other Top 10 themes: Joey Scarbury's "Believe It or Not" from "The Greatest American Hero" (No. 2 in 1981), Pratt and McClain's "Happy Days" (No. 5 in 1976), Mike Post's "Hill Street Blues" (No. 10 in 1981) and, believe it or not, Richard Chamberlain's "Theme From 'Dr. Kildare' -- Three Stars Will Shine Tonight" (No. 10 in 1962). 'Sun City' Extra

There was literally a last-minute addition to the "Sun City" album -- by U2 singer Bono, who had come to New York for the video shoot. According to Little Steven Van Zandt, who organized the project, "He was just so into the whole thing that he wrote a song, 'Silver and Gold,' and we recorded it with Keith Richards and Ron Wood. It's a country/blues kinda thing -- Bono is singing and playing rhythm guitar. Ron Wood's playing bottleneck and Keith's playing electric guitar. We had Steve Jordan and Keith LeBlanc banging on a box and it's kind of a spontaneous kind of session. The album cover had already been done so it's not listed, but it's going to be at the end." Cassette Sales Boom

While everybody's waiting for the compact-disc revolution, prerecorded cassettes continue to dominate sales. According to a recent CBS Records report, they now outsell LPs by almost 2 to 1, and cassette players outsell record players 7 to 1. CDs, which most analysts predict will be the dominant format by 1990, are currently owned by fewer than 1 percent of audio buyers. Jazz is the only major music category in which album sales are still greater than cassettes' (65 percent to 35 percent); country provided the largest margin the other way (70-30). Interestingly, rock and classical had the same margins (60-40, tape over LP). Among the factors in the turnaround: improved tape quality in the last few years and the flexibility and portability of the hardware. But records won't be disappearing for a while: They still provide the best showcase for browsers to make decisions. On the Club Scene

The Cellar Door, shuttered since 1983, will be reopening as a comedy club, the Comedy Stop, in mid-November. The club, which already has a liquor license, will be run by Jerry Stanley, who owns Comedy Stops in Atlantic City and elsewhere . . . Chez, at 1826 Ninth St. (formerly Chez Maurice, and Abart's before that) is instituting a name-act policy on weekends, starting this week with Gloria Lynn (Friday through Sunday), Freddie Cole (Nov. 1-3), Jimmy Witherspoon (Nov. 8-10) and Arthur Prysock (in late November) . . . And Club Saba will be changing its name to the Roxy, probably in November.