Small changelog, as usual for 2.5 most work done by gruntster :

*Restored AC3 and MP2 encoding (regression introduced 2.5.5)

*Added support for latest x264 core

*Better compatibility with some FLV files

*Updated the FFmpeg libraries (version 0.9)

*Drag-and-drop no longer blocks source application for Qt interface

*Resolved Windows XP 32-bit stability issues (regression introduced 2.5.5)

*Windows 7 taskbar now displays encoding progress

*Improved crash reporting on Windows especially Win64

*Compilation fixes for OS X Snow Leopard and Lion (thanks to nibbles)

*Various minor fixes and enhancements