I'd kindly ask for a few sentences description how to use speech announcements (or pointer to some more info)...
I'm also curious what voices are used for Festival ? I found those default voices quite bad, but there are much better alternatives ....http://hts.ics.nitech.ac.jp/README_hts-voice_for_festival.html
and those Festival multisyn voices.
There is also new release 1.95 Beta, that has unrestricted license and includes all voices.... Maybe this is the right choice......http://www.cstr.ed.ac.uk/projects/festival/download.html