Select a file, then tap [Delete]. The file is deleted. You can select multiple files and delete them simultaneously. Check the file details, then tap [Yes].
Select a file, then tap [Other] - [Edit Name]. Now you can rename the file. Enter a new name from the Touch Panel.
Select a file, then tap [Details] to check the detailed file information.
Tap [Details..], and you will be able to preview the file.