Recent additions include:

• Library Location: location of physical media in library. It was being done by genre, but media might fit into multiple categories, so tracking library location means that the media can be decoupled from the genre system. Programmers will know where to find the thing (if required) and what the genre actually is. Multiple genres are being debated, but will probably be done via tags for now.
• Media Type: the physical media type. This is usually audio cd when ripping, but for manual album creation and importing (and other ripping of other media (dvd, etc)) means that this is not always the case.
• Albums with multiple discs: ripping a disc in a multi disc set (Album). I put this off for too long. It's non trivial, for a couple reasons... disc selection and album merging. It's now possible to select which disc the disc is within the album and to merge into existing album. So, disc 2 can be ripped and it helps out with the selection of disc 2, then it's persisted. Disc 1 can be ripped and then it's merged in with the existing disc 2, so that there is only one album with two discs. Subdirectories are created within the album directory (Disc1/, Disc2/, etc) for each disc in a multi disc album.
• It has a favicon.ico!
• Many small fixes