The media players in worlds do not work. These are the ones wich allow you to stream a video to an in-game screen. They require "untrusted URLs" to be enabled and I believe others have encountered this issue. I launched steam, then the game in the terminal and this is the output. It looks like the winegstreamer used isn't finding the gst plugin "uridecode". The log is attached

(wine:84663): GLib-GObject-WARNING **: 22:13:41.124: g_object_set_is_valid_property: object class 'GstURIDecodeBin' has no property named 'max-size-bytes'
winegstreamer warning: uridecodebin5: No decoder available for type 'video/x-h264, stream-format=(string)avc, alignment=(string)au, level=(string)1, profile=(string)constrained-baseline, codec_data=(buffer)0142c00affe100166742c00ad9042684000003000400000300083c48992001000568cb83cb20, width=(int)64, height=(int)64, pixel-aspect-ratio=(fraction)1/1'.
winegstreamer warning: uridecodebin5: ../src-gst_base/gst/playback/gsturidecodebin.c(959): unknown_type_cb ():