[Edit]
OBSOLETE!!
Everything is here now:
http://musicbee.wikia.com/wiki/API_Documentation
http://musicbee.wikia.com/wiki/API_method_reference
First check this post and download the latest example files for your choice of language:
MusicBee API (http://getmusicbee.com/forum/index.php?topic=1972.0)
Then get the latest weekly Musicbee build:
MusicBee latest build (http://getmusicbee.com/forum/index.php?topic=551.999#footerarea)
Here is my "very basics" for starting with the MB API, based on help from people on this forum:
Musicbee API - Very Basics.html (http://dl.dropbox.com/u/10044846/Musicbee/Musicbee%20API%20-%20Very%20Basics.html)
Feel free to add API howto's to this thread. (No discussions please.)
In build file,reference MB dll:
<references>
<include name='C:\Program Files (x86)\MusicBee\System.Data.SQLite.dll'/>
</references>
In plugin, just SQlite away:
using System.Data.SQLite; //http://system.data.sqlite.org
pluginDBFileName = mbApi.Setting_GetPersistentStoragePath()+sep+about.Name+".db";
DB = new SQLiteConnection(@"Data Source="+pluginDBFileName);
DB.Open();