I'll get to the root of the question quick. I have two different DVD players, both of which are MP3 compatible, but one just clumps all of the files together regardless of whether they are located in sub-folders or not (TOSHIBA), while my primary player allows me to branch into specific directories (YAMAHA). My question is, how do you know how a particular player handles MP3s without actually trying it out. Is there a standard that can be referenced in the player's specifications? Any help would be greatly appreciated.