Disklavier

In the process of teaching my kids midi and reading music (along with 
piano) we've converted a lot of Pop and modern midi files either 
directly for the E3 or with the E3 playing the piano portions.   Some 
are actually pretty good, (most are what you expect when you have kids 
learning music .. lol )    Anyway, is someone keeping a repository of 
these kinds of files somewhere?   We have plenty to contribute and, of 
course, would like to see what others have done

Thanks
-dd