UPDATE:
I have converted all of the 150G of AIFFs i had to FLAC (became about 60-70GB of them) and I have added another 30-40 GB of FLAC files (ripped from CD to AIFF with all the album artworks and then using AudioGate (from KORG) to convert to FLAC), put them on the same drive, and the PBD-1 takes less than 2 min for the initial update, and less than 30sec for subsequence turn-ons. Then I can use my laptop/iphone to access the BPD-1, create playlists, play and display all information and artwork from the album. I 'm happy with that result!
Yet, I would love to see Bryston somehow fix the problem with AIFF loading time, because as you know, many of us already have had a huge library of music saved under WAV, AIFF..etc.