Although Text-To-Speech (TTS) synthesis has been little used in Computer-Assisted Language Learning (CALL), it is ripe for deployment, particularly for minority and endangered languages, where learners have little access to native speaker models and where few genuinely interactive and engaging teaching/learning materials are available. These considerations lie behind the development of "Digichaint," an interactive language learning game which uses "ABAIR" Irish TTS voices. It provides a language-rich learning environment for Irish language pedagogy and is also used as a testbed to evaluate the intelligibility, quality and attractiveness of the "ABAIR" synthetic voices. [For the complete volume of short papers, see ED572005.]