Small but very cool update: we now have cutscenes from Melody of Memory without subtitles available for download.
This was made possible by a member of the KH modding community, Vladabdf, who was able to rip video files directly from the game. He's currently contributing to OpenKH, a project that aims to expand the community's knowledge of how the Kingdom Hearts games run, and make modding them more streamlined. Check out his Twitter and YouTube. If you have any programming knowledge and an interest in the project, I'm sure they'd appreciate some help.
Check out our full Cutscene Archive for scenes from the entire series.
Site News Cutscene Archive - Kingdom Hearts Melody of Memory (no subtitles)