Oddly, considering the SD card is stated as being for media only, there is almost no way to save any actual media to the card without using a PC to do it. That setting to redirect media to the card seems to have no effect on music and video from any app I've used or seen. Pictures get redirected, but other media never is. The setting is a mystery, as no apps seem to honor it. SD card usage is majorly messed up on WP and we are all hoping for a fix in 8.1.