Theres is never really one simple answer, of course. Several questions to consider.
1. Is this to stream around the house within the confines of your own wifi?
2. Is this feature going to be for just the tablet or will android or iphones need to be able to use it?
3. Is this a lot of music? Perhaps a cloud based service would work (i.e. Amazon or itunes or several others).
4. I use Helium Music Manager for my huge library. This program has apps for android, windows, and iPhone/pods/pads. This app lets you stream directly from your own pc. I really like it's sql based DB. It really does more than most programs to help me catalog the music files (tags and properly renaming files, etc.) It is not "slick" but has good basic player.
5. I also use what was once known as SqueezeBox. It's primarly purpose was to stream your computer music files to a player elsewhere in the home (i.e. hooked up to your stereo in the L
. It has grown over the years with more sophisticated devices and has added apps to stream anywhere.
Here is a site of several apps for android.
http://www.subsonic.org/pages/apps.jsp
Let the search for the Great White Whale (streamer) begin.
