Complex sentence: On October 19,2014, the first part of the source code was released on Bitbucket, and on December 25,2014, the missing parts (sound drivers) were added and the code was officially released under the BSD license.
Split into simpler sentences: On October 19,2014, the first part of the source code was released on a Bitbucket repository. On December 25,2014, the missing parts (sound drivers) were added and the code was officially released under the BSD license.