I was planning on releasing a revision of this importer earlier tonight, but I think I might hold off for a few days to polish up some of the rough edges and improve handling of other formats I haven't tested as much with yet.
Anyway, here's a preview of what the latest version is looking like with MPC:
07-Open Car.mpc -------------
com_euphonos_apeTags = (
"ALBUM=Deadwing",
"ARTIST=Porcupine Tree",
"TITLE=Open Car",
"TRACK=7",
"YEAR=2005"
)
kMDItemAlbum = "Deadwing"
kMDItemAttributeChangeDate = 2005-06-12 02:31:52 -0700
kMDItemAudioBitRate = 239
kMDItemAudioChannelCount = 2
kMDItemAudioSampleRate = 44100
kMDItemAudioTrackNumber = 7
kMDItemAuthors = ("Porcupine Tree")
kMDItemCodecs = (Musepack)
kMDItemContentCreationDate = 2005-06-09 00:00:59 -0700
kMDItemContentModificationDate = 2005-06-09 00:06:31 -0700
kMDItemContentType = "net.musepack.musepack"
kMDItemContentTypeTree = (
"net.musepack.musepack",
"public.audio",
"public.audiovisual-content",
"public.data",
"public.item",
"public.content"
)
kMDItemDisplayName = "07-Open Car.mpc"
kMDItemDurationSeconds = 227
kMDItemFSContentChangeDate = 2005-06-09 00:06:31 -0700
kMDItemFSCreationDate = 2005-06-09 00:00:59 -0700
kMDItemFSCreatorCode = 0
kMDItemFSFinderFlags = 0
kMDItemFSInvisible = 0
kMDItemFSLabel = 0
kMDItemFSName = "07-Open Car.mpc"
kMDItemFSNodeCount = 0
kMDItemFSOwnerGroupID = 501
kMDItemFSOwnerUserID = 501
kMDItemFSSize = 6790049
kMDItemFSTypeCode = 0
kMDItemID = 985676
kMDItemKind = "Musepack Audio File"
kMDItemLastUsedDate = 2005-06-09 00:06:31 -0700
kMDItemMediaTypes = (Sound)
kMDItemMusicalGenre = ""
kMDItemProfileName = "Insane"
kMDItemRecordingYear = 2005
kMDItemTitle = "Open Car"
kMDItemTotalBitRate = 239
kMDItemUsedDates = (2005-06-09 00:06:31 -0700)
net_musepack_musepack_streamVersion = 7