Where is the location of the collection folder - Zune s/w?

[Windows Central Question]

Location of "collection" folder - Zune s/w

I would like to know the location of the folder "collection" seen in the Zune software. Is it in the phone memory or in the pc. When I connect my Limia 900 to the pc, the Zune s/w launches automatically. If the collection software is in my pc, how can I access the contents of the collection folder without connecting to the phone.