diff -ur Project-X_0.91.0/noguisources.lst Project-X_0.91.0.new/noguisources.lst
--- Project-X_0.91.0/noguisources.lst	2011-07-31 13:18:13.000000000 +0200
+++ Project-X_0.91.0.new/noguisources.lst	2013-08-20 23:39:29.786982535 +0200
@@ -66,6 +66,7 @@
 src/net/sourceforge/dvb/projectx/thirdparty/TS.java
 src/net/sourceforge/dvb/projectx/video/IDCTRefNative.java
 src/net/sourceforge/dvb/projectx/video/IDCTSseNative.java
+src/net/sourceforge/dvb/projectx/video/IDCTFast.java
 src/net/sourceforge/dvb/projectx/video/MpvDecoder.java
 src/net/sourceforge/dvb/projectx/video/Preview.java
 src/net/sourceforge/dvb/projectx/video/PreviewObject.java
diff -ur Project-X_0.91.0/sources.lst Project-X_0.91.0.new/sources.lst
--- Project-X_0.91.0/sources.lst	2009-01-15 19:53:35.000000000 +0100
+++ Project-X_0.91.0.new/sources.lst	2013-08-20 23:39:25.703599480 +0200
@@ -66,6 +66,7 @@
 src/net/sourceforge/dvb/projectx/thirdparty/TS.java
 src/net/sourceforge/dvb/projectx/video/IDCTRefNative.java
 src/net/sourceforge/dvb/projectx/video/IDCTSseNative.java
+src/net/sourceforge/dvb/projectx/video/IDCTFast.java
 src/net/sourceforge/dvb/projectx/video/MpvDecoder.java
 src/net/sourceforge/dvb/projectx/video/Preview.java
 src/net/sourceforge/dvb/projectx/video/PreviewObject.java
diff -ur Project-X_0.91.0/src/net/sourceforge/dvb/projectx/video/MpvDecoder.java Project-X_0.91.0.new/src/net/sourceforge/dvb/projectx/video/MpvDecoder.java
--- Project-X_0.91.0/src/net/sourceforge/dvb/projectx/video/MpvDecoder.java	2011-07-31 13:18:14.000000000 +0200
+++ Project-X_0.91.0.new/src/net/sourceforge/dvb/projectx/video/MpvDecoder.java	2013-08-20 23:39:18.993517806 +0200
@@ -74,6 +74,7 @@
 
 	private IDCTRefNative idct;
 	private IDCTSseNative idctsse;
+	private IDCTFast      idctfast;
 
 	private int preview_horizontal_size = 512;
 	private int preview_vertical_size = 288;
@@ -136,11 +137,15 @@
 
 		idct = new IDCTRefNative();
 		idctsse = new IDCTSseNative();
+		idctfast = new IDCTFast();
 
 		if (IDCTRefNative.isLibraryLoaded())
 			idct.init();
 
-		if (IDCTRefNative.isLibraryLoaded() || IDCTSseNative.isLibraryLoaded())
+                if (IDCTFast.isLibraryLoaded())
+                        idctfast.init();
+
+		if (IDCTRefNative.isLibraryLoaded() || IDCTSseNative.isLibraryLoaded() || IDCTFast.isLibraryLoaded())
 			acceleration = true;
 	}
 
@@ -2420,6 +2425,19 @@
 			}
 		}
 
+                else if (IDCTFast.isLibraryLoaded() && isAccelerated())
+                {
+                        /* copy or add block data into picture */
+                        for (comp=0; comp<block_count; comp++)
+                        {
+                                /* ISO/IEC 13818-2 section Annex A: inverse DCT */
+                                idctfast.referenceIDCT(block[comp]);
+
+                                /* ISO/IEC 13818-2 section 7.6.8: Adding prediction and coefficient data */
+                                Add_Block(comp, bx, by, dct_type, (macroblock_type[0] & MACROBLOCK_INTRA)==0);
+                        }
+                }
+
 		else
 		{
 			/* copy or add block data into picture */