The m4a files are playing OK in the car, it seems. But, 3.92 won't play them on the PC. It will, however, move them, which 2.30 wouldn't do. So, that's a good thing. I don't know if the Basic version will rip CD's directly to the DMS Playlists, though. I have a feeling I will have to use some other ripper to the hdd, then use PMM to copy to the Playlists.
On the bright side, at least I was able to install it in Registered basic mode, not Trial mode, as some people seem to get stuck with, or so it seems from other posts.
If you installed 3.92 over an original CD installed version and you got it registered OK, you should be able to rip to MP3, WMA, FLAC, etc, and it should play those too, but not the AAC files. Good that it is able to move the m4a files around though.
BTW, I noticed that 3.92 did NOT recognize changes made to the DMS in 2.30. Yet, 2.30 recognized changes made by 3.92. Is that normal?
Sorry - I couldn't comment - I haven't used Music Manager in anger - I could never get on with it.