I've tried lots of options; from the aftermarket waterproofed ipods, to cases, to the aftershox. Here's what I've found:
-The aftershox is the best option (just wish it wasn't so stupid expensive...though they are now down to $120 on amazon). It's a lot more durable than the player/earbud combos, and doesn't need to be stored somewhere (clipped to goggle strap, stashed under cap, etc.).
-As mentioned, you need good earbuds for the ipod-esque options. Any water in the ear canal and the audio dies. That being said, the cheap options on Amazon work well (ex:
https://www.amazon.com/...tive/dp/B07PNCFWJM); just make sure they have the "pine tree" tips not the "mushrooms." The pricier brands like H2O Audio didn't work better than the generics.
-Bluetooth has a range of 1-2 inches in water (easy to test with a BT hrm and a watch), which is why you don't see streaming/BT options.
ECMGN Therapy Silicon Valley: Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)