Yes. Tobi includes support for SAPI 5 voices installed on the computer where the application is running (SAPI 4 has been deprecated by Microsoft in the sense that the .NET framework only recognizes the version 5+ TTS voice engines). The speech synthesizer can be invoked to generate audio content for individual text fragments or for entire sections of the text document (in which case the finer granularity of the text/audio synchronization is preserved). SAPI voices are listed directly in Tobi's audio preferences, where the user can choose a particular voice to use before running the TTS generation. Future versions of Tobi will include support for lexicons and other advanced TTS features, but for true automated TTS production we recommend using SSML and the DAISY Pipeline.