hi, i am basically in the dark when it comes to anything other than putting a game in my ds, and turning it on. the reviews on the r4 seem to show it a fairly simple, and that would be the best for me. i would be using it for music and video primarily, but prob would end up using roms. I am looking for ease of use, and ease of file transfer. also if someone could tell me what is involved in using a suggested flash setup; am i going to have to buy software for transferring music, or to get it to some elusive format, or are they just going to be drag and drop(the flash unit either converts, or already supports most formats). please try your best to fill me in here, and to generalize the process. i pretty much know how to get the r4 up and running, but have no clue how to get music and video on my ds, but at least i know how to put a cd in my pc, and mount and use it.