The media app performs a one–time of the content that you copied to your wireless and network-attached storage devices. The scan can take time when the storage device has a good amount of files.
If you recently copied content to your storage device and you do not see your files, you can refresh the view.
Connection to your wireless device's Wi-Fi network can be lost when a mobile device enters ECO Mode. To recover the connection, go to your mobile device's Wi-Fi settings and choose the name of your mobile device.
You can copy any file to your storage device, however, the device to which you stream your media files can play only the file formats that it supports. The media app does not convert files to other formats. See your mobile device's specifications for a list of supported file types.
Do not allow Time Machine® to use your storage device for backups. Doing so will reformat the storage device's hard drive.
If you reformatted the storage device by mistake, you can set it back to its original format. Visit your device's support website for further details: Seagate wireless products or LaCie wireless products