diff -Naur sidplay-libs-2.1.1-old/libsidplay/include/sidplay/sidplay2.h sidplay-libs-2.1.1/libsidplay/include/sidplay/sidplay2.h
--- sidplay-libs-2.1.1-old/libsidplay/include/sidplay/sidplay2.h	2004-06-14 22:08:04.000000000 +0200
+++ sidplay-libs-2.1.1/libsidplay/include/sidplay/sidplay2.h	2008-11-23 19:13:58.000000000 +0100
@@ -50,6 +50,7 @@
     sid2_player_t  state        (void) const;
     void           stop         (void);
     void           debug        (bool enable, FILE *out);
+    int            cia1_last_ta (void) const;
 
     // Timer functions with respect to resolution returned by timebase
     uint_least32_t timebase (void) const;
diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.cpp sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.cpp
--- sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.cpp	2004-06-14 22:08:02.000000000 +0200
+++ sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.cpp	2008-11-30 15:26:45.000000000 +0100
@@ -172,6 +172,7 @@
 {
     ta  = ta_latch = 0xffff;
     tb  = tb_latch = 0xffff;
+    last_ta = 0;
     ta_underflow = tb_underflow = false;
     cra = crb = sdr_out = 0;
     sdr_count = 0;
@@ -320,9 +321,19 @@
     case PRB: case DDRB:
         portB ();
         break;
-    case TAL: endian_16lo8 (ta_latch, data); break;
+    case TAL: 
+        endian_16lo8 (ta_latch, data);
+        // store last timer A value to calculate song speed
+        if (ta_latch != 0) {
+          last_ta = ta_latch;
+        }
+    break;
     case TAH:
         endian_16hi8 (ta_latch, data);
+        // store last timer A value to calculate song speed
+        if (ta_latch != 0) {
+          last_ta = ta_latch;
+        }
         if (!(cra & 0x01)) // Reload timer if stopped
             ta = ta_latch;
     break;
diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.h sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.h
--- sidplay-libs-2.1.1-old/libsidplay/src/mos6526/mos6526.h	2004-06-14 22:08:02.000000000 +0200
+++ sidplay-libs-2.1.1/libsidplay/src/mos6526/mos6526.h	2008-11-22 19:33:06.000000000 +0100
@@ -92,6 +92,10 @@
 private:
     static const char *credit;
 
+public:
+    // The last timer A value to calculate song speed.
+    int last_ta;
+
 protected:
     uint8_t regs[0x10];
     bool    cnt_high;
diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/player.h sidplay-libs-2.1.1/libsidplay/src/player.h
--- sidplay-libs-2.1.1-old/libsidplay/src/player.h	2004-06-14 22:08:02.000000000 +0200
+++ sidplay-libs-2.1.1/libsidplay/src/player.h	2008-11-30 16:02:04.000000000 +0100
@@ -455,6 +455,9 @@
     void           debug        (bool enable, FILE *out)
                                 { cpu->debug (enable, out); }
     const char    *error        (void) const { return m_errorString; }
+    int           cia1_last_ta  (void) { if (m_info.environment == sid2_envR) return cia.last_ta;
+                                         else return sid6526.last_ta;
+                                       }
 };
 
 
diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.cpp sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.cpp
--- sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.cpp	2004-06-14 22:08:02.000000000 +0200
+++ sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.cpp	2008-11-30 16:04:37.000000000 +0100
@@ -80,6 +80,7 @@
 {
     locked = false;
     ta   = ta_latch = m_count;
+    last_ta = 0;
     cra  = 0;
     // Initialise random number generator
     if (seed)
@@ -131,9 +132,19 @@
 
     switch (addr)
     {
-    case 0x4: endian_16lo8 (ta_latch, data); break;
+    case 0x4: 
+        endian_16lo8 (ta_latch, data); 
+        // store last timer A value to calculate song speed
+        if (ta_latch != 0) {
+          last_ta = ta_latch;
+        }
+        break;
     case 0x5:
         endian_16hi8 (ta_latch, data);
+        // store last timer A value to calculate song speed
+        if (ta_latch != 0) {
+          last_ta = ta_latch;
+        }
         if (!(cra & 0x01)) // Reload timer if stopped
             ta = ta_latch;
     break;
diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.h sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.h
--- sidplay-libs-2.1.1-old/libsidplay/src/sid6526/sid6526.h	2004-06-14 22:08:02.000000000 +0200
+++ sidplay-libs-2.1.1/libsidplay/src/sid6526/sid6526.h	2008-11-30 16:05:38.000000000 +0100
@@ -43,6 +43,9 @@
 
 class SID6526: public component
 {
+public:
+    // The last timer A value to calculate song speed.
+    int last_ta;
 private:
 
     static const char * const credit;
diff -Naur sidplay-libs-2.1.1-old/libsidplay/src/sidplay2.cpp sidplay-libs-2.1.1/libsidplay/src/sidplay2.cpp
--- sidplay-libs-2.1.1-old/libsidplay/src/sidplay2.cpp	2004-06-14 22:08:02.000000000 +0200
+++ sidplay-libs-2.1.1/libsidplay/src/sidplay2.cpp	2008-11-23 19:23:56.000000000 +0100
@@ -146,3 +146,6 @@
 
 uint_least32_t sidplay2::timebase (void) const
 {   return SID2_TIME_BASE; }
+
+int sidplay2::cia1_last_ta(void) const 
+{  return sidplayer.cia1_last_ta (); }