If you play A Link to the Past DX on an emulator without this patch, the streamed music volume is likely to be a lot louder than it should be. This patch reduces the volume to an appropriate level. It is based on the volume_decrease.ips included with Conn's alttp_msu1.ips (http://www.zeldix.net/t453-enable-msu-streaming-music-for-alttp), but adapted to work for A Link to the Past DX (http://www.romhacking.net/hacks/2234/). Make sure that you first apply loz3-dx_v1.2.ips before applying this patch.
Legend of Zelda - A Link to the Past, The (NA) (1.0) + loz3-dx_v1.2.sfc
CRC32: 2d57e33a
MD5: 9a2ce86dbbe9557d4fc876f74b1703b7
SHA1: ce8513a38afb82b60ee9473b9f66b5b7cd46a523
SHA256: c0babee5b5c8abc64ab58991527e7fc5f2cdfdea4c14a7b1b1b0d5c86436238a