I’ve done some more research on renaming and filling tags for audio files, and I also found
a solution for indexing all my files into an application to retrieve on which removable media
are stored my favorite songs !
To rename and to fill the tags the best choice for me is Juk
and to do search on removable media I use yammi
This two very nice tools are KDE applications, I didn’t find any equivalent programs for gnome 🙁