I have music stored on the BDP-2 internal hd (downloads), and two 4TB Seagate USB drives (one for DSD, the other for cd rips). For my classical listening, I want to add a combined drive that is sorted by composer then compositions - an instance would be to have all performances of Beethoven's 7th Symphony in one folder, no matter if downloaded 96/24, ripped DSD or ripped CD. I figure I will need about 8TB of space. 1) Will the library size of the BPD-2 accommodate another 8TB of hard drive I info (I'd like to keep the existing drive also attached because they are sorted by performer)? 2) For those of you who use NAS, have you experienced less sound quality than from a USB attached HD? NAS would be awesome because I could then backup to a cloud service like Backblaze. 3)Would Roon do all this "gathering together" for me?