A Gift to all Lovers of Shivaji Maharaj. You can now download the entire Shivcharitra by Shivshahir Babasaheb Purandare. You can download it in audio format or text format. The links are given below :-
Text Format : Download .pdf file in marathi here http://bit.ly/bMJTTP or
MUST KNOW : Many Historical Publications are Digitized by Microsoft Corporation. These are available in digitized format at http://www.archive.org/ for free download. Just enter the search keyword and download the publication for free.
(The Audio files linked here are not my effort mates, i just discovered this wonderful collection at http://www.esnips.com/web/shivcharitra-babasahebpurandare) Thanks to the original poster. The text matter was found on maharashtratimes, all i did was to download the 150 parts and compile it into one big compilation.
You can download these audio files from here as well