I just purchased a new sound pool using the built in store in Music Maker(latest version downloaded a couple days ago and fully updated). When I went to listen to loops, they wouldn't play. When I double-clicked one an error window popped up saying the file format couldn't be read by MMM.
For some reason the file extensions on all of the loops in the soundpool are .MXCOGG instead of .wav or other readable format. Did I miss a step when I purchased the additional soundloops? All of the free ones that come with the full installation seem to be working fine.