* first update of the Spanish translation by Antonio Javier Varela Calvo (refs #407). 31 strings are untranslated and 146 fuzzy atm. He is going to finish his work until sunday.

Added dynamic variable volume-change to notify upon a volume change. The rc-interface listens to it and prints some feedback on its output.

* localise the 'Local playback' info-btn and the ckbox properly (no breakage of the string freeze, since existing strings are used, just forgot to implement this somehow)

* first update of the Simplified Chinese translation by Wei Mingzhi (refs #407), more translated strings are going to follow soon

* reverted my update of libcddb from 0.9.6 to 1.2.1 since it breaks cddax on OSX (refs #357). The previously applied patch for 0.9.6 doesn't seem to be necessary, since it compiles fine without it (at least using GCC 4.0)