On sale today are the following shows new to the schedule at the Coach House in San Juan Capistrano: Little River Band (June 20), Gillian Welch (June 27), Golden Smog (June 29) and David Lindley and Hani Naser (July 6). The Dada show on June 15 has been rescheduled for July 5. . . . Coming to the Galaxy Concert Theater in Santa Ana are Electrafixion (June 15), the Skatalites (June 18), Aimee Mann (June 22) and Beck (June 27). Tickets also go on sale today.