Poland's Unsound Festival, a blowout for experimental, club, and post-classical music, comes to New York with a slew of concerts, films, and public programs. Opening with a free concert in Lincoln Center's new David Rubenstein Atrium, the festival boasts an ambitious lineup of artists from both North America and Europe. Highlights include screenings of Andy Warhol's silent films with live performances of commissioned soundtracks; stateside debuts by ten-plus DJs and groups; and some very intriguing Wordless Music.