Given ongoing lamenting about the lack of theaters and performing-arts venues in Vancouver and Clark County, here’s a reminder. The Old Liberty Theater in Ridgefield remains a well-kept secret — unless you’ve already got the place on your radar.The 200-seat Old Liberty attracts national and regional acts that emphasize fine playing, want great acoustics and really don’t belong in bars, according to longtime owner Don Griswold. Regular and recent guests include bluegrass band the Misty Mamas, acoustic guitar wizard Terry Robb, guitar-and-violin duo Fire & Grace, the global New World String Project and even comedy rockers The Strange Tones.“It’s a listening room,” Griswold said. “It’s an opportunity to have a concert experience and hear skilled players who’d rather not get stuck playing clubs.”Griswold never wanted to get stuck with a nightclub either. In 2001 Griswold and wife Earleen relaunched the historic Old Liberty (which first opened in 1946 as the Liberty Theater) with a strategy of offering special events, not nightly noise.“Great shows with great players,” Griswold said. “Not trying to be a club scene, not slinging whiskey every night.” But to generate more cash flow, he added, the front lobby became the Seasons Coffee Shop, open daily.