I was trying to drag some attention in the hope someone had the answer! :P
Now that I think about it, however, perhaps before wondering about how
to implement that mechanic on Essentials we should perhaps first wonder
how it works in Hg,Ss,B&W1&2...
If I remember correctly, the "footstep" sound effect that plays on Hg&Ss
depends on the tile's properties... perhaps it works the same way with the water,
waterfalls, whilrpools and windvanes in HgSs and street musicians in B&W?
Maybe we could implement the stepping sounds on essentials by messing
a bit with the tileset, by fact the ledges play a sound effect when jumped over,
so it should be reasonable.
However, things might get complicated with environment sound effects, because :
1-We'd need to find a way to make them loop
2-By stepping from a tile to an other, the sound effect might re-play over
3-We'd also need to find a way to make the sound effect stop when getting off the tile with said property
4-I don't think multiple SEs can be played at the same time, which would make this mechanic hard to implement along with the stepping sounds.