FTP Voyager Remote Folder actions

I need to schedule to download a file everyday that changes based on date profile below. How would I set the variables for this.

File needed to download everyday:    FOF_08_04_15.mp3   this is the one for today Aug 4 2015

                                                            FOF_Month_Day_Last 2 digits of Year.mp3

Any help would be greatly appreciated.

Thanks,

Mark