Not answering the question but this is related and perhaps of interest...
Minnetonka is now selling the software Discwelder Bronze 1000. It used to only be available bundled with the DVRA-1000.
Doesn't look like you can edit raw DSD files though, unless I am missing something.
From:
http://www.minnetonkaaudio.com/products/discwelder01000.htmldiscWelder BRONZE 1000m imports Linear PCM files in 16 and 24 bits and at 44.1; 48, 88.2, 96 176.4 and 192 kHz
UI displays full path, as well as bit dept and sample rate
Import and convert DSD to PCM for Authoring
Import and convert DSD to PCM and place in a folder for editing
Converts DSD to PCM at up to 24/96 (default is 24/28)
World’s most affordable DSD to PCM converter
Create Hi-definition DVD-Audio discs
Create Universal DVD-Audio discs by importing the audio into the Video_TS or video zone with a single mouse click.
Author CD in same project
Supports gapless playback
Create pause down to the millisecond
Supports mix and match bit depth and sample rates – you can have 24/192, 24/96, 24/48 and 16/44 tracks all in the same project.