Hi.
To me use of midifiles and mp3 playback or whatever when a song
are sequensed ready to just press play = KARAOKE!
You're stuck to whats programmed when you press play, can't add
a refrain or lenghten a solo when dancefloor is full and people
having fun.
When play with styles, you have that freedom all the time, and
you're using the style and chordprogression your way, by use mp3
midifiles etc, you just follow already done (or others work),
and at the end, most "discjokeys" sounds the same, cause they use
the same records.
I know midifiles can be edited, but so can styles, just the way
you like them to play.
Happy Playing.
GJ