Version: (using KDE 4.4.0) Installed from: Slackware Packages Please add a new bias "not in playlist" for the dynamic playlist mode. For whatever reason in dynamic mode the same songs are added to the playlist over and over again, often even 4 or 5 times in a row directly after each other. Now, I suppose there are not many people who want to listen to the same song 5 times in a row, especially when selecting a dynamic playlist. The new bias would take care that that doesn't happen.
I have also seen this, expecially when there are not so many songs to choose from. However I have added a "last played before" option to the global bias. There is still a problem because the song is not considered played if it's only in the playlist but at least that helps a little. Note that the new option allows you to define a time distance, so e.g. played 10 hours ago. Does that solve your problem?
This seems to be a duplicate of bug 205284
*** This bug has been marked as a duplicate of bug 175172 ***