MythMusic: don't use cdio_paranoia for CD playback

There is problem with cdio_paranoia_read_limited() getting stuck in a loop if
the CD is ejected while playing. In theory it should give up after a set
number of retries but that doesn't seem to be working in the latest version.

I tried to lock the CD tray while playing but while the media monitor supports
locking it doesn't appear to be working :( so the easiest solution for now is
to use the non paranoia cdio routines which do detect an ejected CD properly.

mythplugins/mythmusic/mythmusic/cddecoder.cpp

@@ -231,15 +231,18 @@ bool CdDecoder::initialize()
             m_end = end2;
         }
 
-        m_paranoia = cdio_paranoia_init(m_device);
+        // FIXME can't use cdio_paranoia until we find a way to cleanly
+        // detect when the user has ejected a CD otherwise we enter a
+        // recursive loop in cdio_paranoia_read_limited()
+        //m_paranoia = cdio_paranoia_init(m_device);
         if (NULL != m_paranoia)
         {
             cdio_paranoia_modeset(m_paranoia, PARANOIA_MODE_DISABLE);
             (void)cdio_paranoia_seek(m_paranoia, m_start, SEEK_SET);
         }
         else
         {
-            LOG(VB_GENERAL, LOG_ERR, "Warn: CD reading with paranoia is disabled");
+            LOG(VB_GENERAL, LOG_WARNING, "CD reading with paranoia is disabled");
         }
     }
     else
@@ -375,6 +378,9 @@ void CdDecoder::run()
                                 arg(m_curpos).arg(c));
                             memset( &m_output_buf[m_output_at],
                                 0, CDIO_CD_FRAMESIZE_RAW);
+
+                            // stop if we got an error
+                            m_user_stop = true;
                         }
                     }