I don’t think it’s the mplayer version that’s the problem.
I’m using 1.0rc2_r27637-3.pm.3 from Pacman.
I’ve dump’ed this stream without any problems:
mms://wms.dr.dk/nas01/auto/cms/Resources/dr.dk/DR1/Min_Italienske_Droem/2009/01/e5eab6da-492f-47b1-b0f4-13e15e57ec60/italienske_droem.wmv
But it doesn’t contain any “funny” characters.
I have a sneaking suspicion that it’s
Min%20italienske%20dr%c3%b8m20090312
that’s causing the problems?
If its an mms you are trying to download, then install MiMMS packaged by Packman: PackMan :: Package details for MiMMS
note it is packaged for all the recent openSUSE versions.
For a front end, you can use: PackMan :: Package details for gMiMMS
It uses GTK±2.x for the graphical user interface, which also happens to work well under KDE3 (and I assume KDE4)