Just a mention that the numbers in the song title bug, does actually exist. In build 6 and above (latest versions), even if the 'Filter out numbers' checkbox is unchecked, the numbers are still being filtered.
I believe this worked fine in build 5, to avoid confusion.
this was supposed to be feature not bug but we're going to change it in next release. Since build 6 "Filter out numbers" works like this:
checked: filters all digits from artist and name
unchecked: filters only solely standing numbers (so it filters out '08' from 'Britney Spears 08 Lucky' but leaves '2' in 'U2 - Fly Away')
in next build we're going to offer 3 modes of filtering .. none, medium, full