[DaveBlake]

Any idea how can I edit MyMusic70.db? or do I need to migrate to MariaDB?

What an odd sequence of thoughts.

There are plenty of free SQLite browsers that will allow you to view and modify MyMusic70.db. I use DB Browser for SQLite but I know there are many others. Just take care if this is your first use of SQL etc., and of course take backup copies of this file.

I do not advise you to try this unless you have a reasonable level of techincal experience and competence. It is not hard, SQL is pretty logical, but I really don't want to hear if it goes wrong. I have to say your suggestion of migrating to MariaDB makes me worried that this is a more hands-on approach then you will be comfortable with. But who knows what your skills are, so I mean no offence, simply that you take responsibility for what you do.

On the other hand Kodi is open source, and your db is your data to do with what you wish. So lift the bonnet and poke about - unlike messing with cars you can take a backup copy of the db and easily revert.

I actually don't think there is a simple equivalent tool for MariaDB. Also the MySQL/MariaDB family of databases are much slower than SQLite, which Kodi was designed for. So unless you really need a client server setup for Kodi, I would advise sticking with the local SQLite database (the default Kodi installation).