Muine stops checking for images as soon as it has found a title/artist
match. This is less than perfect in the following cases:

- The first match does not have an image, but subsequent matches do. In
this case muine displays no cover when it could conceivably get one
(Example "Detunized Gravity" by "De Phazz"
- The first match (Heuristically) is not the right album, and further
result iteration *would* find the right album

Examples: Orbital - Orbital

Should show:
http://www.amazon.com/exec/obidos/tg/detail/-/B00004T6UY/qid=1079310100/sr=8-3/ref=pd_ka_3/103-7748037-8091058?v=glance&s=music&n=507846
(yellow cover)

Actually shows:
http://www.amazon.com/exec/obidos/tg/detail/-/B00004T6UZ/qid=1079310100/sr=8-2/ref=pd_ka_2/103-7748037-8091058?v=glance&s=music&n=507846
(brown cover for "Orbital - Orbital 2")

Blur - Blur

Should show:
http://www.amazon.com/exec/obidos/ASIN/B000000WDA/qid=1079310224/sr=2-3/ref=sr_2_3/103-7748037-8091058
(yellowish cover)

Actually shows:
http://www.amazon.com/exec/obidos/ASIN/B00005176F/qid=1079310224/sr=2-2/ref=sr_2_2/103-7748037-8091058
(faces cover for "Blur - The Best of Blur")

Muine should search for the best match, where best is defined as:

- Greatest % match that has an image, and % is greater than the defined
threshold