Bumping an ancient thread.
Has anyone figured out in the meantime how to play drm protected wma files on a mac? I tried again recently but to no avail. I fired up a windows 2000 virtual machine and got a similar error message to what pogmoor had above. In a search I found that the root cause of the problem in this instance is likely to have been the then default settings in windows.
I dug out the files as I wanted to listen to specific instruments in connection with my "differences" thread. (viewtopic.php?f=11&t=123133
). For my purposes the wma files are better than the cd as I want just to compare the guitars.