If the rating feature is turned on you can rate the songs from the player…
Settings -> Configure Amarok -> General -> Use Rating = On
Song Information Fetching
Amarok can automatically fetch information about the current song from the internet…
Context -> Lyrics
This will fetch the lyrics of the current song from http://lyrc.com.ar and display it within amarok.
Context -> Artist
Fetches the Wikipedia page for the singer of the current song.
Right Click Song -> Edit Track Information -> Summary
Right Click on the CD Cover Image -> Fetch from Amazon.com
Click on the ‘Next’ button until you find an Image you like and then click ‘Save’.
If you want more from amarok, you can install some Amarok plugins(they are called ‘Scripts’ in amarok)
If you did not find the plugin you need, you can write your own plugin.
OSD for Current Song
It is possible see the title of the current song without opening amarok.
Settings -> Configure Global Shortcuts -> Show OSD = Ctrl+Shift+Q(for example)
Now whenever you press that shortcut, a small OSD will popup showing the name of the current song and the artist.
Browse the Amarok DB
Amarok stores all the information in a SQLite database(by default). This can be found at ‘~/.kde/share/apps/amarok/collection.db’. You can browse through it with a software capable of opening SQLite. You will find playlists, albums, fetched lyrics etc.
I have not found a practical use for this – yet. If you find any, let me know.