Welcome to the forum. So glad to have you. Here is the thing: Sadly, I do not have the Black Session (2002 or 2005). I had download them from another forum member but it was mp3 only. I can tell you however, that the 2002 had a much better audio/sound over all. The 2005 sessions for some reason sound far away and almost as if recorded with a video camera as opposed to actual recording equipment. Longs story short, it's not as good as the 2002 sessions. That being said, I DON'T think that it has anything to do with the mp3 format and that even in a lossless format (Flac or Wav or whatever) they would probably still not sound that great. I'm sure that at least one of our users may have them physically. I will get in touch and see if they would be willing to rip the CD into a FLAC.
Let's see if we can get these (i'll try). As for you not realizing that A.P and Shivaree are the same singer, that's very very funny but understandable since they are not mainstream. Anyway, a quick run down of what you can find from both are:
4 albums, Breach EP, 7 unreleased studio tracks (B-sides), 2002 and 2005 Black Sessions, at least 7 unreleased live tracks, 5 different radio station sessions with short interviews in between songs, a few alternate/versions or re-recordings of their songs, Ambrosia Parsley's E.P and about 10 unreleased Ambrosia Parsley songs. Just a list for you to work on