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--- a/mpd2src/wavreader.cpp
+++ b/mpd2src/wavreader.cpp
@@ -53,7 +53,7 @@
     return true;
 }
 
-const unsigned char *WavReader::data(size_t packetbytes)
+const unsigned char *WavReader::data(size_t packetbytes, ssize_t &nread)
 {
     if (m_index + packetbytes <= totalBytes()) {
         m_index += packetbytes;