is there any nice free voice syntheses software with a quality close to this At&t project http://www.research.att.com/~ttsweb/tts/demo.php for linux beside espeak and gnuspeech (which i find unusable because of the bad quality of the result speech)
There is festival, but I can't speak to its sound quality. It's a
yum install festival away on Fedora.
i have used http://www.yakitome.com and it is really coll, and it does host your mp3 generated files, and somehow it uses the At&t speech syntheses system