Hi
Old thread but it came up when in Google and nobody provided the following answer that has worked for me.
You need to download the free WMV add on for Quicktime. You can get it from the Micro$@#t website:
http://www.microsoft.com/downloads/d...displaylang=en
Once installed you can open WMA/WMV with Quicktime.
Open the files with Quicktime and choose File > Export > Audio to AIF. You can then drag the AIF's into iTunes and they'll be imported into your library.