I am not able to play wma files in Amarok, although I am able to in VLC. Is there anything I should do to make it work in Amarok?

Search with Octopi for ffmpeg and see if you have it and the gstreamer0.10-ffmpeg installed. I do not have a wvm file to test this on so I am not sure it will work, you may have to restart Amorak or logout and in for it to work.

Yes, I found them to have been already installed. I did a reinstall too but with no luck.

I instead installed soundKonverter, converted the wma files to ogg and Amarok had no difficulty in playing them.

Thanks, nevertheless.