The JPCSP Team have released a new version of their Java written PSP Emulator for Windows, heres whats new:
Fixed an issue in display sync (by gid15).
Added error message for patched boot modules (by gid15).
Improved sceMp3 and integrated partial MP3 playback in Media Engine.
Cleaned up and improved Media Engine base functioning.
Avoid NullPointerException in scePsmf.