The song ID is a Int32 value:
https://msdn.microso...(v=vs.110).aspxAnd we had to work with the limitations of that max value, the known values for possible HMX DLC ID numbers, and a way that would allow us to make things work. The decision was made to allow for 11,473 authors, and each author can get up to 99,999 songs each. I honestly don't remember why now, but we're also adding a +1 prefix so author 11473 ends up at 2,147,3xx,xxx, which is where I decided to stop it just to be sure and so author 11,474 wouldn't complain about only having 83,647 songs instead of 99,999 like everyone else!