Antique Cassette in Pixelmator
Using Rectangle Shape make a square and fill it with blue color.
Create another two shapes and fill them with white color.
Using Pen Tool create a shape like in the image below and fill the layer with beige color.
With Ellipse Shape and create ten balls, fill them with black color.
Using Ellipse Shape create a round, fill it with light beige color and use 10px for the Stroke.
With Pen Tool create a little square and fill it with black color.
Duplicate layer and put it next to another shape.