Sdr2 is hosted by Sourgeforge. If is offline you might want to download from
The source code dwells in
Win32 (MinGW) executable and required libraries can be found in
Precompiled libraries of DCMTK for MinGW, MSVC 2008 and 2010 Express (32-bit) are provided as zip compressed folders. Download requires high speed internet access.
Please see install how to go from there.

Sdr2 is free software. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.