Complex sentence: The soundtrack was available for download on the website of MTV during 2005-2006, but the whole album was not available anywhere, so Shinoda released it separately for streaming on his official website on March 1,2010.
Split into simpler sentences: The soundtrack was available for download on the website of MTV during 2005-2006. So Shinoda released it separately for streaming on his official website on March 1,2010.