Which SD Card???
What I would point out is that there is a limit to the number of songs that can be recognized by the system. I found many songs on my 32GB library card didn't show in the selection list. My MY 2010 COMAND manual states a maximum of 255 folders with 255 songs, but with a total track limit of 1200. I think I get much more, but you would probably be disappointed with a full 32GB SD card. I now use a 16GB card. It is easy to have several smaller cards and switch them.
Don't forget you can move some of your favorite music to the Music Register/Hard Disk.
I also used 8.5GB Dual Layer DVD disks for MP3 music in my S Class, and that worked well. It had the same problem with a disappointingly low maximum track count on my Transcend 32GB PCMCIA/Compact Flash card. Just a bit slower when change disks.
Let us know what you find on your cards.




