Hello friends. I have a NW-E005F and use a Intel-Mac with Mac OS X 10.4.10 and can't use the manager. I guess i am doing all right (dropping the .jar file and downloaded OMGAUDIO folder to player's root), and when I open the manager, i can't do anything, i can't update any file to the player, all the buttons appears to be innactive. When i left the original OMGAUDIO (the folder with my musics), the manager read the albums and the songs, but i still can't do anything, as delete or transfer any file. What am i doing wrong? I am dropping both the ffmpegwin32 and the ffmpegX (for Mac OS) to the player root. Any idea? Thankss!!! And congrats for your job... its helping a lot of people!!