Comment 12 for bug 432701

I think that the dependency chain should be like this amarok <<| phonon-backend-xine << libxine1 << libxine1-ffmpeg
where << is real dependency and <<| "or-dependency".

The only missing part is the libxine1 << libxine1-ffmpeg, which would need the "upgrade" of the suggestion to strong dependency.
I see no issue since the package is in main.

I also "cc" libxine1 in this bug, since this is the appropriate package to handle it.