If you specifically need the legacy MAPP XT version for compatibility with older projects, users in the Meyer Sound Users Community have suggested a few workarounds:
: Start with a general web search using the term "Mapp Xt Download." You can refine your search query based on what you know about Mapp Xt, such as its purpose, the type of device it's used on (e.g., Windows, Mac, mobile), or the organization associated with it.