typedef long (CALLBACK* CDRclose)(void);\r
typedef long (CALLBACK* CDRgetTN)(unsigned char *);\r
typedef long (CALLBACK* CDRgetTD)(unsigned char, unsigned char *);\r
-typedef long (CALLBACK* CDRreadTrack)(unsigned char *);\r
+typedef boolean (CALLBACK* CDRreadTrack)(unsigned char *);\r
typedef unsigned char* (CALLBACK* CDRgetBuffer)(void);\r
typedef unsigned char* (CALLBACK* CDRgetBufferSub)(void);\r
typedef long (CALLBACK* CDRconfigure)(void);\r