Here is an example. Ironically it is without PD but for loading images with the OF filesystem (but I tested with PD). Audio and video are loaded as urls and played with java script: https://import.handmadeproductions.de/
It is also possible to route the audio from the audio/video player to ofxPd or load a local PD patch.
Here is an example with soundfiler: https://soundfiler.handmadeproductions.de/
One disadvantage in comparison to https://audioplayer.handmadeproductions.de/ is, that it only loads .wav and .aiff while the other player also accepts mp3 and other formats (because its decoded to pcm in java script and send directly into a Pure Data array).