I am not sure what “specific manner” that you really require it to be in…but now I realize what you meant about rearranging files…you hadn’t specified in your original post that you were talking about how the files are shown in a DLNA client (like TV, WDTV, phone, etc.).
Well, couple things:
First, there’s two things involved with DLNA streaming - the DLNA server (EX2) and a DLNA client (TV, tablet, etc.). The DLNA metadata (i.e. filenames) served up by the DLNA server is pretty much same across all DLNA compliant servers as they adhere to the DLNA standard…but stuff like file sort order by date or filename is upto the client…in my case my Sony bluray player can sort by filename or by file date. It will vary from client to client and this sorting is not upto the DLNA server.
Second, don’t forget, there is some level of control/customization available if you go to the Twonky server’s page (the DLNA server on the EX2) by going to http://<EX2’s local IP>:9000 (port 9000 is the Twonky server’s admin page). I for example have chosen to only include a couple folders on my attached USB drive so that not allmedia files are scanned and served up but just two specifc ones. You can customize which folders you want to be scanned and served up - though all subfolders underneath those specified folders will automatically be included) and then aso specify which media types you want to scan those folders for…for example if you have a mixed media folder but simply want MP3s to be served up you can specify Twonly to scan for audio file types only for that folder. This is available under the Sharing settings from Twonky’s admin web page.
Finally, for this media sharing functionality you could have not used a NAS at all and used free DLNA server software running on a PC or Mac, like the excellent Universal Media Server amongst other choices. Then you’d have more control over the folders and manage the files in a specific manner.