ANOTHER SUMMER, another Beach Boys anthology. It never ends, does it? All you kids who bought Endless Summer last year can now buy Spirit of America, thereby obtaining for your partyin', cruisin' and boogiein' pleasure no less than 23 new Beach Boys songs, each one a classic, as advertised on TV. And if you're like the average buyer who never heard most of the songs on Endless Summer before, you can be sure you've never heard any of these. You would think that after putting 20 hits on one album, they'd be a little short the second time around, and they are. Most of these songs weren't hit singles, but most of them could have been if the Beach Boys hadn't recorded so many magnificent songs in such a relatively short time.