Originally Posted by rwantland
Just realized that after unplugging I can also see jpg that I transferred via usb. When the device is plugged in via usb, you cannot see any images except the sample pictures.
If Mass Storage mode is enabled when connected with USB, you can't see them, or play music on the memory card, but if you don't have Mass Storage mode enabled, you can still access the files.
Options > Media Card > Auto Enable Mass Storage Mode When Connected -- I have mine set to prompt.