diff --git a/azbox/playback.cpp b/azbox/playback.cpp
index 1e656f3..9b9ab25 100644
--- a/azbox/playback.cpp
+++ b/azbox/playback.cpp
@@ -504,6 +504,10 @@ void cPlayback::GetChapters(std::vector<int> &positions, std::vector<std::string
 	titles.clear();
 }
 
+void cPlayback::RequestAbort(void)
+{
+}
+
 cPlayback::cPlayback(int /*num*/)
 {
 	lt_info("%s: constructor\n", __func__);
diff --git a/azbox/playback.h b/azbox/playback.h
index c56c69e..264d464 100644
--- a/azbox/playback.h
+++ b/azbox/playback.h
@@ -46,6 +46,7 @@ class cPlayback
 		void FindAllSubs(uint16_t *pids, unsigned short *supported, uint16_t *numpida, std::string *language);
 		bool SelectSubtitles(int pid);
 		void GetChapters(std::vector<int> &positions, std::vector<std::string> &titles);
+		void RequestAbort();
 #if 0
 		// Functions that are not used by movieplayer.cpp:
 		bool Stop(void);
diff --git a/generic-pc/playback.cpp b/generic-pc/playback.cpp
index bea2349..41e610d 100644
--- a/generic-pc/playback.cpp
+++ b/generic-pc/playback.cpp
@@ -75,6 +75,10 @@ void cPlayback::GetChapters(std::vector<int> &positions, std::vector<std::string
 	titles.clear();
 }
 
+void cPlayback::RequestAbort(void)
+{
+}
+
 cPlayback::cPlayback(int /*num*/)
 {
 	printf("%s:%s\n", FILENAME, __func__);
diff --git a/generic-pc/playback.h b/generic-pc/playback.h
index dbcc1fe..a567709 100644
--- a/generic-pc/playback.h
+++ b/generic-pc/playback.h
@@ -28,6 +28,7 @@ class cPlayback
 		void FindAllSubs(uint16_t *pids, unsigned short *supported, uint16_t *numpida, std::string *language);
 		bool SelectSubtitles(int pid);
 		void GetChapters(std::vector<int> &positions, std::vector<std::string> &titles);
+		void RequestAbort();
 		//
 		cPlayback(int num = 0);
 		~cPlayback();
diff --git a/libspark/playback_lib.h b/libspark/playback_lib.h
index dcb78e3..2946d2f 100644
--- a/libspark/playback_lib.h
+++ b/libspark/playback_lib.h
@@ -109,6 +109,7 @@ class cPlayback
 		bool GetPosition(int &position, int &duration);	/* pos: current time in ms, dur: file length in ms */
 		bool SetPosition(int position, bool absolute = false);	/* position: jump in ms */
 		void FindAllPids(uint16_t *apids, unsigned short *ac3flags, uint16_t *numpida, std::string *language);
+		void RequestAbort();
 #if 0
 		// Functions that are not used by movieplayer.cpp:
 		bool Stop(void);
diff --git a/libspark/playback_libeplayer3.cpp b/libspark/playback_libeplayer3.cpp
index f21bd96..ed846a4 100644
--- a/libspark/playback_libeplayer3.cpp
+++ b/libspark/playback_libeplayer3.cpp
@@ -478,6 +478,10 @@ void cPlayback::GetChapters(std::vector<int> &positions, std::vector<std::string
 	titles.clear();
 }
 
+void cPlayback::RequestAbort(void)
+{
+}
+
 //
 cPlayback::cPlayback(int num)
 {
diff --git a/libspark/playback_libeplayer3.h b/libspark/playback_libeplayer3.h
index 05c0b6a..0d2894e 100644
--- a/libspark/playback_libeplayer3.h
+++ b/libspark/playback_libeplayer3.h
@@ -34,6 +34,7 @@ class cPlayback
 		void FindAllSubs(uint16_t *pids, unsigned short *supported, uint16_t *numpida, std::string *language);
 		bool SelectSubtitles(int pid);
 		void GetChapters(std::vector<int> &positions, std::vector<std::string> &titles);
+		void RequestAbort();
 #if 0
 		// Functions that are not used by movieplayer.cpp:
 		bool GetOffset(off64_t &offset);
diff --git a/libtriple/playback_td.cpp b/libtriple/playback_td.cpp
index 2fee33a..6abcbac 100644
--- a/libtriple/playback_td.cpp
+++ b/libtriple/playback_td.cpp
@@ -594,6 +594,10 @@ void cPlayback::GetChapters(std::vector<int> &positions, std::vector<std::string
 	titles.clear();
 }
 
+void cPlayback::RequestAbort(void)
+{
+}
+
 off_t cPlayback::seek_to_pts(int64_t pts)
 {
 	off_t newpos = curr_pos;
diff --git a/libtriple/playback_td.h b/libtriple/playback_td.h
index 51d5ac1..7733c19 100644
--- a/libtriple/playback_td.h
+++ b/libtriple/playback_td.h
@@ -112,6 +112,7 @@ class cPlayback
 		void FindAllSubs(uint16_t *pids, unsigned short *supported, uint16_t *numpida, std::string *language);
 		bool SelectSubtitles(int pid);
 		void GetChapters(std::vector<int> &positions, std::vector<std::string> &titles);
+		void RequestAbort();
 #if 0
 		// Functions that are not used by movieplayer.cpp:
 		bool Stop(void);