I am also an EM2000 user......There are 1000's YES 1000's of Styles available to download. Original Roland Styles plus many styles already converted by other keyboard owners to Roland.stl format for you to load into your EM.
Here are just 3 Links to get you started....Do a Web search yourself.
http://www.daytonamusic.com/rag/index.htm
http://www.rolande600.cjb.net/
http://www.roland.com.br/

Graham UK