music: added music tagger and cd copy program

wiki/music.md

@@ -13,3 +13,18 @@ There are differences depending on your preffered client interface.
 
 - [Airsonic](airsonic.md) is a free fork of Subsonic, can be dockerized and has
   a web-interface.
+
+## Music Tagger
+
+To label and sort music you need a program to add tags.
+
+- metaflac is a programm to edit the tags of flac files. It is bundled in the
+`flac` package for debian and arch based systems.
+
+## Scan CDs
+
+You can convert your CDs to files on your computer.
+This way you don't have to search for your CDs all the time.
+
+- [Exact Audio Copy](https://www.exactaudiocopy.de) can rip music and automatically
+tag it with the help of a list of databases.