To download DAT zipped files see the links here....
http://gitamakarandam1.4shared.com/
http://www.4shared.com/dir/yEUzu0ce/sharing.html
http://gitamakarandam2.4shared.com/
http://www.4shared.com/dir/ntqVRt35/sharing.html
FOR mp3 link:
http://www.4shared.com/dir/JGiwGjly/GITAMAKARANADAM_SWAMIVIDYAPRAK.html