The Tower of Babel is another story high, thanks to the fledgling audio cassette industry. No longer content to simply reel out taped renditions of a Rolling Stones goldie or a Bing Crosby oldie, the new versions of the handy cassettes are sounding out on everything from money management to marriage counseling, evangelical sermons to menopausal symptoms.
Travelers to London, Paris and Rome, for example, can now lock in (with $2.95) on a current Pan American promotional gimmick: tape-recorded walking tours of the cities (each narrated by a properly accented guide), as well as taped auto tours of the French and...