O EasyTAG é de fato uma ótima ferramenta para esse problema. Eu encontrei minha resposta aqui . Em termos de como usá-lo, a melhor referência acaba por ser documentação da EasyTAG .
Open EasyTag, navigate to a folder with music files in it, select all the files in the folder, or all the files you want to tag, click on the "Scan Files" button (you'll have to hover over them to figure out which one it is).
Then, make sure the scanner dropdown is set to "Fill Tag," then in the Fill Tag field, make the appropriate edits until the example below the field looks like what you're looking for. If you need further help as to what to put in the Fill Tag field, click on the "?" button for the legend (listing of what the different possible codes are to translate with) and hit the mask button to list some starting points.
When you're happy with the results, click the "Scan Files" button (in the Scan Files dialog box, not the one you originally clicked to get where you are...the icons look the same) and your changes will be applied. If you are not getting Artist or Album name, simply select all that you want to change, enter the data and click the little button next to that field and all files that are selected will the filled in or changed to that artist or album. This works in most fields.
When you're done, click the save button and you're done.
PS: The CDDB scanner often works pretty well, if you have full albums that you're trying to tag, or at least commercially available song files.
PPS: I am apparently half awake still. According to what you wrote in your original post, try this in the Fill Tag field:
%n. %a - %t
Esta é a seção relevante para esta pergunta:
1.2.2. Automatically with “Fill Tag” scanner:
Some conditions to use this mode:
- files sorted by albums
- filenames or parent directory contain tag information (artist, album, title, …)
- empty or not correct tags
The “Fill Tag” scanner uses a pattern to associate words in the filename and directories with the tag entries. By this way, the tag fields can be completed automatically by pressing the “green” button in the scanner window or the toolbar. If the tag is partially completed, use the option “Overwrite fields when scanning tag” in the “Scanner” tab of the “Preferences” window, to replace all fields by the new values.
Each code correspond to a field, following theses rules :
Strings associated with code Will fill the field %a Artist %b Album %c Comment %p Composer %r Copyright %e Encoded by %g Genre %i None! (used to ignore a string) %l Number of tracks %o Original artist %n Track %t Title %u URL %y YearNote : to avoid mistakes, it is recommended to use a code only one time in the pattern. Of course, like when tagging manually, only the selected files are processed by the scanner. You can use the defined patterns in the list, or write yours own patterns to correspond to the format of yours file names and directories. To avoid mistakes when selecting the right pattern, or writing it, a preview shows immediately the results before to apply the pattern. If you need some help with the different codes, press the “Help” button (the lifebuoy) to display the legend of each code. Also, if you want to save yours own patterns, edit or sort then, by pressing the “Mask” button an little editor will be shown on the scanner window.
Below an example of use of patterns :
a) the following filename :
“/mnt/MP3/EVANESCENCE – Fallen (2003) – Rock/01. Going Under.mp3” b) with the pattern : “%a - %b (%y) - %g/%n. %t” c) you will fill the tag with theses strings : Artist (%a) => EVANESCENCE Album (%b) => Fallen Year (%y) => 2003 Genre (%g) => Rock Track (%n) => 01 Title (%t) => Going Under