Thanks for that link Matt.
As for the 48k question ... heck I can't remember been away for awhile.
Just recall I always had trouble trying to use my digital keyboard along with BB.
( old Roland FP-7 )
My computer does not have dedicated speakers so I use my FP-7 as the speakers. Computer plays fine through FP-7 as long as I'm playing MP3's using Transcribe or midi's using something like Synthesia.
But as soon as I hook a usb midi cable from FP-7 to computer ... I get nothing.
Tried many different midi/driver settings.