Audio FlashCards is an audio-based Chinese vocabulary flashcard system for Windows Mobile / Pocket PC. The software helps students learn a large number of Chinese 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 3600 of the most frequently used Chinese words and phrases, each with a native speaker's voice recording of its pronunciation, all available for free download.
Both Simplified and Traditional Chinese suuport. The required Chinese fonts can be downloaded from here: http://www.declan-software.com/chinese_ppc/index.htm