After replacing all of the cover art and correcting the tags, I backed up the BS5 music by connecting an external hard drive directly to the BM5 and copying the files by going into the service mode on the BS5.
Now, it would be nice to keep the backup synchronized via Beoplayer. I connected the external hard drive to my computer and opened Beoplayer in Windows mode on my Mac. I had Beoplayer scan the hard drive. It worked perfectly. The music library in Beoplayer indicated which music was stored in both locations and which music was stored only on the Beosound 5.
Here's the problem: When I select "copy from Beosound 5" in Beoplayer, the files are copied to my computer's internal hard drive rather than the external hard drive. In the Beoplayer configuration, I have indicated the location for saving ripped CDs as the external hard drive. Still, Beoplayer copies files from the Beosound 5 to the computer's "Music" folder on the internal hard drive. Does anyone know how to direct Beoplayer to copy files to an external hard drive? Is this a matter of changing the location of the music library in Windows Media Player?