https://space.physics.uiowa.edu/rbsp/audio/mp3/L2A/2019/07/07/rbsp-a_WFR-audio_emfisis_BuBvBw_20190707T17.mp3

The University of Iowa website contains audio files of radio emissions from space, specifically from the Van Allen Radiation Belts.

More audio files in this folder: https://space.physics.uiowa.edu/rbsp/audio/mp3/L2A/2019/07/07/

Sounding like an epic Star Wars space battle, these low dispersion whistlers, along with proton whistlers ... were recorded by the EMFISIS Waves instruments on NASA's Van Allen Probes

Source: https://space.physics.uiowa.edu/rbsp/audio/

And from their Showcase: Wild Whistlers 2016-09-20

https://space.physics.uiowa.edu/rbsp/audio/201609/VanB-2016-09-20_2350.mp3

How did I find this collection of audio files? I used the following Google search:

-inurl:(html|htm|php) intitle:"index of" +"parent directory" audio

Listen to a random MP3: http://john1126.com/random-space-sound.php