I tried the searching ogg files example, and some results are shown in a "multimedia card". Since all results are audio files all look the same (a speaker icon), I have to hover to get some more details based on the file name and make several clicks to actually listen to it.
Maybe we should consider a more informative way of preview results when they are audio files. This may involve including part of the name of the file, showing a relevant related image in addition to the speaker, playing the audio on clic/hover, or something else.