The movement has been altered for the next version, so that shouldn't be an issue. I'm always double-checking it, though! And for now, I do kinda like that the spirits spawn in walls, but I am considering defining their spawn areas precisely so they never spawn in walls. In fact, you just gave me an idea... *grin*
And the background music can be muted by clicking the sound icon in the top right corner, and then clicking sound back on again. But yes, I do intend for there to be (hopefully better) music or atmospheric sound that can be turned of easily. In fact, having too much music will be a problem, because the file size will grow, and the bigger the file size, the more lag, so music will either minimal or non-existent. If lag becomes an issue, music will be the first thing to go XD
In general, I'm happy with the movement, because I can't stand RPG maker slow movement. If people can zip around the maps and explore them, then mission accomplished!