How do audio thumbnails operate? I have an issue with audio thumbnails being too small for my liking. I wanted to manually edit them in some graphics editting software as I noticed that they are PNG files (checked the cache folder). However, they seem to be 1 or 2 pixels tall and pretty unreadable, not what I expected. How do they operate at all? Is it possible to manually adjust the thumbnails and stretch the wave using some picture editting software at all?