I am running Ubuntu Juanty 9.04 on my PC. When I plug my T10 into the usb port, it is recognized immediately and mounted. I added several mp3 files to the music folder and I can play them from the T10 while on the computer. However, when I disconnect the T10 from the computer only the older mp3's show up in the playlist. They are on the T10 (I checked the memory space). Why can I only see them through the computer? I thought I made a mistake and tried to copy again, but is says the file already exists. Why can't the T10 see them? I tried a reset without luck. Any help would be appreciated.