A customer computer accesses, through a network, a media content file, as follows. A session is opened between a customer computer and either an application server or a media content server. A request to view a media content file is received from the computer. A temporary metafile having a temporary metafile name is created. The metafile contains a network address where the media content file can be obtained, an encrypted name of the media content file and an unencrypted file path leading to the media content file. The temporary metafile name is sent to the customer computer. The customer computer requests the temporary metafile to learn the encrypted media content file name, unencrypted media content file path and the network address. The customer computer subsequently sends the encrypted media content file name and the unencrypted media content file path to the network address to obtain the media content file. The metafile is cancelled or deleted before or at the end of the session with the customer computer, for security reasons.