KDE 3 had noatun which wasnt ported to KDE 4.
Juk is a very limiting player being only a jukebox not even allowing you to add tracks in playlist in real time. It also cant handle streams.
Amarok is a bit too much. Qmmp is at the least very immature yet (and not KDE based).
Are there other options for users needing something in between amarok and juk?
The ideal IMO would be if Juk got some added features like the two i mention above, but searching bugs.kde.org brings up unfilled requests for them since years. Maybe now that noatun is removed would be a good time to add them?

why not use xmms in kde4?