OK, so I finally got it working.
Here is what I have done:
Inside a linux machine, I unzipped "gapps-jb-20130301-signed.zip", then I copied the uncompressed content to the "/media/system/" folder.
sudo cp ~/gapps-jb/system/* /media/system/ -rf
Then, I put the micro SD card back in the Wandboard. My wandboard has a WiFi connection.
After the reboot, the wandboard did some updates and then I had google "Play Store" in the Apps section.
I created a new google account in the Settings, Accounts section.
Then, I started the "Play Store" app and browse for the Netflix app (entertainment free app). Then I installed it with the Install button in the Google Play Store. After a few minutes (2-3 minutes), the Netflix apps was downloaded and it installed itself in the "Apps section".
I'm now able to see video from the Netflix apps. However it is still running a bit slow... I see frames lagging...
I have a wandboard dual only running from SD card. (Lexar Class 10, 16GB)
Maybe the Wandboard quad has better performance... It would be great to try running Android from a SSD drive.
Thanks everybody for your support,