If you want to upload a file via System Recordings and that file is meant to replace an existing recording, when you give it the same name as an existing file it will replace the file, but now in the list of “System Recordings” you have two files with exactly the same name! If you go to select that file to be used, you will see “two or more files with exactly the same name”.
If you are uploading a file and giving it the same name, you may want to a warning pop up and give you the option to continue or not.
This is with Freepbx 2.10 with all the updates applied and Asterisk 1.8 with all updates applied. But I did have the same problem with Freepbx 2.9 as well.