I've can confirm with that exact album art (good choice!). I've noticed when using rhythmbox it is also blurry, so I think this is notify-osd scaling the art so I am reassigning it there.
Maybe it's the scaling algorithm notify-osd uses, there is a similarly sized thumbnail on the main banshee ui by the slider and it doesn't look too blurry, but I'm just measuring with the naked eye.
I've can confirm with that exact album art (good choice!). I've noticed when using rhythmbox it is also blurry, so I think this is notify-osd scaling the art so I am reassigning it there.
Maybe it's the scaling algorithm notify-osd uses, there is a similarly sized thumbnail on the main banshee ui by the slider and it doesn't look too blurry, but I'm just measuring with the naked eye.