Hi Rikki, yes I have the whole library, bonus paks etc...
You touched on a useful feature...Reading an audio file and laying out the chords (Reasonably acurate)..then you can take the chord progression, add composite styles, VST's and real drums and tracks..and you can get a backing track that really kicks butt..This can be done without playing a single note

It is also a great feature for learning tunes from CD's etc...