/*
 * Get an equalizer band value.
 *
 * Note: Legal band indices range from 0 to 9 instead of 1 to 10.
 * 
 * This method raises an Xmms::Error exception if XMMS is not running,
 * and an ArgumentError exception if the band index is out of range.
 *
 * Examples:
 *   band = remote.get_band 2
 *   band = remote.band 8
 *
 */
static VALUE xr_eq_band(VALUE self, VALUE band) {