One of the most effective tools for learning a new langauge is using some sort of spaced-repition software such as Anki or Mochi. It is often recommended that students create their own decks - the process of creating and translating each card yourself is a valuable part of the learning process. One of the more time consuming parts of the process, however, is including audio translations in your cards.
creme is a tool which take pre-existing phrases in a given language and creates audio files for them using the Google Translate TTS API.