Madhurashtakam in the voice of MS Subbalakshmi is available here :
M.S. Subbulakshmi is widely regarded as the premier female classical vocalist of her generation. She was the first musician ever to be awarded the Bharat Ratna, India’s highest civilian honor. She is also the first Indian musician to receive the Ramon Magsaysay award, Asia’s highest civilian award ! Here you can listen Madhurashtakam in her voice, as well as download the link.