Ah, but this is exactly this issue: What is 'No mapping for .ogg'? (SOLVED) - #10 by vincent.barabus
You can’t use “Add Component File” and select the .ogg. You need to Add Component->Sound and then select the .ogg file. We will of course fix this. I thought this was another problem.
@Erik_Angelin and @mats.gisselson. We should not allow .ogg and .wav to be added directly. They really should be added via a Sound component.