what do you mean by garbled? I haven’t tested this in game yet, so i’m going by my pc tests where the album goes from bmp to png_xbox, back to bmp, and it is still fine. so I assumed it would be fine in game.

you can open an existing file (drag n drop or click open file) and then click on the tab at the top, you’ll see the files in there. you can right click on any one file, replace it with your own. rebuild. bam. you only ever need to build a new package if youre starting from scratch. otherwise just edit!