Defrag My Music to end of disk

I have a massive collection of MP3s on my computer, all stored in my My Music folder. I like how defraggler can move large files to the end of the disk, is there a way I can use that to move my music collection to the end of the drive as well. The files never change, and having them at the end of the drive isn't going to affect performance. more like permanent storage at the end.

Indeed an option where we can mark the files & folders we would like to move to the back of the disk/partion would be very welcome, just collectively using file size & type to say Defraggler what we would like is simply not enough.