/*
 * Set the equalizer values.
 *
 * This method takes either a preamp value and 10 band values, or a
 * preamp value and an array of band values.
 *
 * Examples:
 *   bands = [0.0, -0.5, 0.9, 0.0, 0.0, 0.0, 0.2, 0.5, -0.1, 0.0]
 *   remote.set_equalizer 0.0, bands
 *
 *   remote.set_eq 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0
 *   
 */
static VALUE xr_set_eq(int argc, VALUE *argv, VALUE self) {