audio flashcards is an audio-based japanese vocabulary flashcard system for windows mobile / pocket pc. the software helps students learn a large number of japanese words as quickly as possible in a systematic but fun & simple way. the software incorporates an audio feature that uses a native speaker's voice recordings of a word's pronunciation to aid the learning process. there are currently word files comprising over 4000 of the most frequently used japanese words and phrases, each with a native speaker's voice recording of its pronunciation, all available for free download.