I'm in the same boat as O-P. Amarok works ok. Here are my phonon packages installed. I use xine playback in kde config settings. I suspect some crashes may have to do with ones music collection, how the files were encoded, tagged or named.
Thanks for that list, Texstar. Of those, here are the ones that are not installed here:
I'll try installing those and see if it makes a difference.
As for some the crashes being related to one's music collection, that might be true. I do have the same version of Amarok (I think -- using KDE 4.5.1 in both) working fine in another distro on this computer, same music collection. So maybe some packages are installed over there that aren't installed over here, or some settings are different or whatever, and Amarok over here gets tripped up on certain songs in my collection.