diff --git a/src/add-ons/media/plugins/musepack/mpc/mpc_dec.cpp b/src/add-ons/media/plugins/musepack/mpc/mpc_dec.cpp
index e8b266fd1f..cc6e4e376d 100644
--- a/src/add-ons/media/plugins/musepack/mpc/mpc_dec.cpp
+++ b/src/add-ons/media/plugins/musepack/mpc/mpc_dec.cpp
@@ -194,6 +194,8 @@ MPC_decoder::DECODE ( MPC_SAMPLE_FORMAT *buffer )
 #endif
     Synthese_Filter_dithered ( buffer );
 
+#else
+#	error Define MPC_DECODE to either TO_FLOAT or TO_PCM
 #endif
     // (PluginSettings.DitherUsed  ?  this->Synthese_Filter_dithered  :  this->Synthese_Filter_opt) ( (short*)buffer );
 
@@ -978,8 +980,13 @@ MPC_decoder::MPC_decoder(BPositionIO *file)
   Huffman_SV7_Decoder ();
 }
 
-void MPC_decoder::SetStreamInfo ( StreamInfo *si )
+
+void
+MPC_decoder::SetStreamInfo(StreamInfo *si)
 {
+	fInfo = si;
+		// this is used in MusePackDecoder::NegotiateOutputFormat()
+
   StreamVersion      = si->simple.StreamVersion;
   MS_used            = si->simple.MS;
   Max_Band           = si->simple.MaxBand;
diff --git a/src/add-ons/media/plugins/musepack/mpc/mpc_dec.h b/src/add-ons/media/plugins/musepack/mpc/mpc_dec.h
index b99f0c1a4a..b9c1a47299 100644
--- a/src/add-ons/media/plugins/musepack/mpc/mpc_dec.h
+++ b/src/add-ons/media/plugins/musepack/mpc/mpc_dec.h
@@ -13,7 +13,7 @@ class StreamInfo;
 #define TO_PCM      2
 
 #ifndef MPC_DECODE
-  #define MPC_DECODE    TO_FLOAT    // decode to 32 bit floats ( -1.000...+1.000 )
+#define MPC_DECODE    TO_FLOAT    // decode to 32 bit floats ( -1.000...+1.000 )
 //#define MPC_DECODE    TO_PCM      // decode to 16 bit PCM    ( -32768...+32767 )
 #endif
 
@@ -43,17 +43,6 @@ class StreamInfo;
 #define SYNTH_DELAY     481
 
 
-class Reader {
-public:
-  virtual size_t read ( void *ptr, size_t size ) = 0;
-  virtual size_t write ( void *ptr, size_t size ) = 0;
-  virtual int seek ( int offset, int origin ) = 0;
-  virtual long tell () = 0;
-  virtual void seteof ( size_t ofs ) {};
-  virtual ~Reader () {}
-  virtual int canwrite () { return 0; }; // is writing supported or not
-};
-
 class MPC_decoder {
 private:
   BPositionIO *m_reader;
@@ -114,6 +103,7 @@ public:
   int           SectionBitrate;             // average bitrate for short section
   int           SampleRate;                 // Sample frequency
   int           NumberOfConsecutiveBrokenFrames;  // counter for consecutive broken frames
+  StreamInfo    *fInfo;
 
 private:
   unsigned int  StreamVersion;              // version of bitstream