Here you can enter a name for the object.
If an element was assigned to a layer its layer color will be displayed here. This field reflects the layer color in the Layer Palette. You can drag & drop layers from the Layer Manager or similar layer fields onto this field. You can also assign layers or remove elements from current layers using the menus located behind the small triangle.
Play Sound and Stop Sound let you preview the loaded sound file. The Use Sound setting lets you turn the loaded sound file on and off, and the Start Time setting lets you define at which time in the animation the loaded sound file should start playing.
The sound formats that can be loaded can be found here.
Additional information (size, frequency, length, channel and bits) is also displayed in the Attributes Manager.