Movies and Music on your GBA.
While third parties have previously released devices to allow GBA owners to play music and movies on their hand-helds, Nintendo has stayed silent on the issue. A new listing on the company's website reveals that Nintendo will be releasing their own media reader for the GBA in February 2005.
Nintendo's preview website for the product explains that their media reader will play both MP3 audio files and MPEG4 movies. It will read them off of Secure Digital (or SD) cards. The reader should also be able to play on the Nintendo DS, which also plays GBA games.