Add File This menu item is used to add media file(s) for converting. You can add more than one file or different format file at the same time. The file(s) would be listed on the program main list.
Delete File This menu item is used to delete the file(s) that have been added. you can use mouse to select one or more than one file and then delete it.
Exit This menu item is used to quit the program.

[Edit] Menu, Editing operations, shown as below:

Select All This menu item is used to select all the file(s) that have been added.you can use mouse to select file one by one to convert or use this item to select all.
Invert Selection When you select one or more than one files that have been added.this item can invert the selection to select the other files in the added list.

[Tool] Menu, Tool of view windows, shown as below:

Fix Auto scan media files from list, if it find errors then it try fix it.

[Option] Menu, Offers some tools for editing in the editor window, Show as bellow:

Preference Set the preference setting of the software.

[Help] Menu, Getting help and information, Shown as bellow:

Help menu