Been there, done that. It is messy, complicated and totally uncool.
I'm going to have to chime in on this one, an arp plug-in is waaaaaaay overdue.
You'd basically hold down chords on your Rec Enabled MIDI/softsynth channel and you would hear the arpeggiation.
But what was COOL about it was that when you hit stop and stepped into (their equivalent of the hyper-edit-window,) the played arpeggiated notes were there ready to be tweaked, edited or re-ordered or deleted by hand.
Once again, as you held down chords in real time, playing those long notes, you would hear then later SEE the actual arpeggiated notes in the edit window.
Pretty cool for an ancient program running in OS9.
Hey Mk, I'm gonna have to call that template up & check it out.
But if I may ask, is the Arp Object wired to simply record it's output to an audio channel?
I don't care so much about "printing the audio" of the VI producing the arp sounds, what I'd really like is to step into the Piano-Roll editor and "see" the arpeggiated notes, allowing me to apply different quantization (like more swing, for example,) or to delete or transpose notes quickly & easily.
So, just to clarify, is this possible in Logic 9?
Yup. Check out the part of Logic called the "Environment."