[General Topics] Menneisyys:
Probably the best tool to look for & quickly enter / transfer missing tags is the free MP3Tag. (See for example THIS for other choices.) It’s capable of both importing the song titles and other metadata, including album art, into files from the Web and – which is really useful! – convert metadata stored in the filenames to inline ID3 metadata and vice versa. The latter will be really useful when you have a bunch of files only containing song metadata in one form but not in the other. It’s pretty useful to have accordingly named files for, for example, file sharing and handling with non-library-capable multimedia players (the desktop WMP doesn’t have auto-renaming functionality – in this regard too, MP3Tag IS better). On the other hand, library-capable players only take into account the contents of ID3 metatags and NOT the filename when building up the library. With a song that only has the song metadata in its filename, it’ll keep the song as "Unknown" in the library. You will most definitely want to avoid this. That is, the cases when you will want to use the two-directional conversion are:

-	The files have ID3 tags only (filled in by, say, WMP’s auto-find), but are still named, say, 10.wma because they’re CD rips made with WMP. WMP, as has already been mentioned, isn’t able to rename these files based on the ID3 tags and give them a more meaningful name. Then, selecting Convert / Tag - Filename will convert these tags into files. Note that it’ll use spaces upon encountering characters incompatible with the file system; for example, slashes (/).

-	The files have all the album / artist / title metadata in the filename but not in the metadata. This is pretty common particularly with old files. Then, Convert / Filename – Tag will help. Here, you may end up having to modify the default %artist% - %album% - %track% - %title% filename parsing scheme. For example, if your filenames are names like "Värttinä - 1st Album - 01 - Ruskie neitsyt.wma" (where Värttinä is the artist, 1st Album is the album name, 01 is the track number and "Ruskie neitsyt" is the title), then, you can do the conversion right away. With filenames different from this, you may end up having to edit the filename parser string before the conversion.

Note that you’ll want to use mass-selection (Shift + up/down with the cursor keys or Ctrl-Shift + left click with the mouse) to make the conversion much easier.

Looking up song metadata at freedb.org is equally easy. You manually navigate to freedb.org, enter for example both the artist and album name in the "Search the freedb database" textbox at the top (here, I entered "Varttina" to look for Värttinä’s albums). In the result list, just click (open) the album. If that’s what you’re looking for, look for the "Disc-ID" attribute (in THIS screenshot, it’s just to the left of the mouse cursor). You’ll need to pass MP3Tag both the unique ID given in hexa numbers (here, bf0b160d) and also set the genre when populating songs with ID3 metadata. It’s very easy – the rest will be done by MP3Tag. (Also note that MP3Tag is also able to play back songs – it just uses the system-level player to do the trick.)

Now, let me show you a thorough example of doing this all. Let’s assume we have an album WMP didn’t find any info on and is in, therefore, its just-grabbed state with filenames XX Track XX.wma (again, without any inline metadata; that is, tags). Start MP3Tag and make sure you make the directory having these files visible to the program. To do this, just enter (copy) the home directory of your files to the bottom-most "Directory" input field. In the following screenshot, it’s c:\TYO\080805\full id3\Suomen laulu - kotimaan kasvot:

Press OK. Now, you’re presented a filename-metatag pairing dialog. In this window, you need to make sure the records in the two lists at the bottom mutually coincide. In this case, they do. There may be cases when they don’t; for example, when instead of 01 Track 1.wma, 02 Track 2.wma etc. files, you have 1 Track 1.wma, 2 Track 2.wma etc. (Notice the lack of the leading 0!) Then, you’ll need to manually rearrange the list by selecting a record in the right list and pressing Up / Down to move it one step up/down, respectively.

Also make sure the metadata in the uppermost textfields is OK. Soemtimes you will need to adjust the Genre drop-down list.

Now, just press OK; the tags will be updated:

Now, you’ll still want to accordingly rename your files so that their filename also reflect their contents (unlike the output of WMP’s CD grabber). To do this, keep all the files selected and select Convert / Tag - Filename: