OS X 10.10.5 (14F1605) | MacBook Pro (Retina, 15-inch, Mid 2014) | Intel Iris Pro 1536 MB / NVIDIA GeForce GT 750M
GOG Games Non-Galaxy release.
Install dsound.dll as posted in this forum.
In the Settings application, use resolution 800x600. Other resolutions display the wrong aspect ratio. At 800x600 there will be horizontal and vertical letterboxing and the Ubisoft logo will be properly round. Additionally enable virtual desktop in Wine Configuration if the aspect ratio is still wrong.