Go to http://sourceforge.net/projects/asyncwcflib
select "Code" and "trunk".
Download of all sourcecode is currently only supported when using a subversion client.
Older versions may be downloaded from: http://asyncwcflib.svn.sourceforge.net/viewvc/asyncwcflib/trunk
Select "Download GNU tarball", you can open a zip file containing sourcecode.
Subversion lets you incrementally update your working copy.
Beeing am member of the development team it lets you commit changes you made to the library.
Create an empty project folder e.g. "AsncWcfLib" with a new file "checkout.cmd"
containing the following subversion commandline:
svn checkout http://svn.code.sf.net/p/asyncwcflib/code/trunk trunk
When "checkout.cmd" runs unsuccessful, you should try the following: