Q: Why cache embedded album art in ~/.cache/rhythmbox/album-art?

Hi,

with respect to this bug report:

https://bugzilla.gnome.org/show_bug.cgi?id=677855

...allow me to ask: Why does Rhythmbox do this?

What is the advantage of caching the embedded album art image from a
local MP3/Flac/whatever music file? Isn't this just a waste of harddisk
space?

Also, it doesn't seem to work right all the time. I didn't debug this,
so the following observation could be mistaken, but it seems to me that
when I play a new album for the first time, the cover art will only
appear _after_ playing the first track. Why is this so?

Thank you very much,

Hanno