I just got an R4 a week a so ago and I'm lovin' it. It's my first flash cart and I'm pretty new to all of this. I've had some time to explore some of the homebrew that's out there and decided that I'd rather have something besides moonshell for the media player (maybe DSOrganize or Lick/Lucas's iPod player). I couldn't find any features in the firmware that allowed me to do it legitamately but then I noticed the '_MSHL.NDS' file. I took Lick/Lucas's media player (after DLDI patching) and changed the name to '_MSHL.NDS' and replaced the file that was on the card. And voila! the media button on the start up screen now launches the iPod player. Sweet! No more moonshell (nothing against moonshell). I assume it would work with DSOrganize as well but I haven't tried it yet. Maybe this was already common knowledge but I didn't see any forum posts so I thought I'd throw it out there. Enjoy!