The Financial Post has uncovered evidence that Research in Motion will be unveiling a new music accessory called the BlackBerry Remote Stereo Gateway. The Gateway attaches to a stereo and then streams music files from a BlackBerry via Bluetooth. The information is available through an FCC filing, which has both the user manual and a photo of the Gateway. The device was filed by Cheng Uei Precision Industry Co., Ltd. out of Taiwan, but the BlackBerry brand is all over the place. This is obviously a big push into the consumer space for RIM, especially given the fact that, unlike iPod docks, it’s wireless. Between this and the increasing sizes of microSDHC cards, BlackBerry is becoming more and more viable as a media player.