How can I go back to Media jukebox, it worked so well for me.
It should work as follows:
1) Uninstall MC12 (using its uninstaller)
2) Reinstall MJ8. Make sure that you have the original files & folders from MJ8 in the Media Jukebox's "data" folder. The files MC12 has converted are not compatible.
I have played around with media center now and really like it and would love to use it, if it can bring back my playlists!!! Playlists are the heart of a large music collection and where so much time as been spent managing 70,000 plus songs.
This would be easier if you had created a library backup file with MJ8. When I used MJ8 I did new backups all the time - usually after any bigger change or addition. (I still do that with Media Center)
Hard to believe hitting a check for update button would result in me not being able to access all my playlists which I really have spent countless hours on creating.
An automatic conversion feature would be nice to have. However, I think we can work this out.
... I know they are in there in those .jmd files you pointed me to I just cannot open them, on my main computer ...
... I see a playlistx.jmd file next to mediafile.jmd is there a way to get that info? ...
Maybe you didn't find the correct way to use the Library Manager. I have recently tested it and I didn't have problems with creating a new library that points to an old MJ8 library location. The library files, view schemes, custom fields and all playlists were correctly adopted.
However, here's another way to import MJ8 library data to MC12.
Find MC12's default library location. Usually it is in C:\Documents and settings\[your user name]\Application data\J River\Media Center 12\Library\. (By default this path is partially hidden so you may need to change the Windows Explorer settings to show hidden files and folders.)
This folder contains a lot of .jmd files. Close MC12 and delete all files and possible subfolders from this location. After that copy the MJ8 library files to this emptied MC12 library folder.
Next time you start MC12 it should automatically convert and adopt your MJ8 library and almost everything you had in MJ8 should be in MC12 too. (Possibly MJ8 can have some library data that cannot be converted to the MC12 format, but for example playlists should be available just fine.)
... or even another computer that has a copy of mj 8 that I transfered the .jmd files to. It had a message of "not a valid license" or something.
I guess you have not restored your license on that PC. Without it MJ8 works in the reduced mode. If I recall correctly media library one of the "plus features" that work only in the registered mode.