Dreamcast Conversion is a modpack to make the PC version of Sonic Adventure DX look and sound like the original Dreamcast version of Sonic Adventure.
This is a setup program that installs SADX Mod Loader, Dreamcast Conversion and several other mods on any version of SADX. The November 11 hotfix includes an updated Time of Day mod which no longer crashes when starting Big's story.
If you have already downloaded the November 10 package, all you have to do is update OptionalMods.7z in the instdata folder to update the installer. You can get OptionalMods.7z here: Dcmods.unreliable.network