Louis,
You are right, internal speakers are a compromise anyway. If you want good speakers, you could buy the Yamaha YSTMS50 powered stereo speakers. Roland keyboards have a good supply of connectors: headphones, line-out, MIDI.
Since you use your computer to create music, there should be a program out there (maybe someone can chime in with this info) to create styles on your computer. You can then xfer to your keyboard.
Let us know when you purchase this keyboard, and your review. Let us know how you find working with the keyboards midi ports. Welcome to the forum.
Starkeeper

[This message has been edited by Starkeeper (edited 03-02-2004).]