Trying out the freetts demos, I got: --- $ java HelloWorld All general Mode JSAPI Synthesizers and Voices: Using voice: kevin16 Can't find synthesizer. Make sure that there is a "speech.properties" file at either of these locations: user.home : /home/leonardo java.home/lib: /opt/blackdown-jdk-1.4.1/jre/lib --- Which leads me to think that freetts' ebuilds should create a symlink to /usr/share/freetts/speech.properties from $JDK_HOME/jre/lib. After creating said symlink manually, I was able to compile and test the demos successfully. Should this action work as a reasonable solution, you could take a look at java-access-bridge-1.3.1.ebuild, where a similar symlinking was necessary. Thanks.
Fixed.