decoder/audiofile: fix bit rate calculation

NEWS

@@ -7,6 +7,7 @@ ver 0.19.3 (not yet released)
   - curl: another fix for redirected streams
 * decoder
   - audiofile: fix crash while playing streams
+  - audiofile: fix bit rate calculation
   - ffmpeg: support opus
 
 ver 0.19.2 (2014/11/02)

src/decoder/plugins/AudiofileDecoderPlugin.cxx

@@ -209,7 +209,7 @@ audiofile_stream_decode(Decoder &decoder, InputStream &is)
 	const auto total_time = audiofile_get_duration(fh);
 
 	const uint16_t kbit_rate = (uint16_t)
-		(is.GetSize() * uint64_t(8000) / total_time.ToMS());
+		(is.GetSize() * uint64_t(8) / total_time.ToMS());
 
 	const unsigned frame_size = (unsigned)
 		afGetVirtualFrameSize(fh, AF_DEFAULT_TRACK, true);