#if BOOST_VERSION >= 106100
using namespace boost::placeholders;
#endif
-using boost::shared_ptr;
+using std::shared_ptr;
static SNDFILE* ref = 0;
static int ref_buffer_size = 0;
static float* ref_buffer = 0;
static void
-audio (boost::shared_ptr<AudioBuffers> audio, int channels)
+audio (std::shared_ptr<AudioBuffers> audio, int channels)
{
/* Check that we have a big enough buffer */
BOOST_CHECK (audio->frames() * audio->channels() < ref_buffer_size);