PallenTx --
1 - "When you all say you are playing songs from an SD card, are they added to your library, or are you browsing to the folder and playing?" -- I have two or three playlists that I most often use. My music listening is usually just background accomapaniment while I sit down by the firepit and read. Or, when the WiFi works right, sit out on the swing and browse the web or read.
2 - "If they're in your library, how did you get them there?" -- The answers are (a) they appear to be, and (b) I have no idea. After reading your question, I went and looked in "My Music," and there they are. The MS music app may have done it. I tried it first, before deciding I didn't like it.
3 - "Is new stuff automatically added?" -- Well, I guess. If I move new songs to the D:\Music folder, they appear in Multimedia8 next time I open it.
4 - "Multimedia 8 is nice, but lacks aesthetically - no album cover art when browsing your library and such, just folders." -- That suits me just fine. I just want to listen to it -- not look at it.
Now, if I could just coax a little more volume out of those speakers, all would be well. They really aren't loud enough for comfortable listening. I did order a Bluetooth speaker, but hate having to add another gadget to do something that I expected the tablet to do.
Hope some of that helps.
Take care,
Russ