adding content of a node reference

Hi there,
I've got the following structural problem:

I have created two content types: Flyers and Shows/Parties.
A show can have one flyer attached (I've made a node reference as field).
And there are Flyers, which stand for themselves, not attached to any show.

There's a page, with a flyer gallery for past shows.

The editor should be able to upload only flyers AND when he wants to add a show, he should be able to upload a new flyer but also choose one from the existing flyers pool.

My question: Is it anyhow possible to add the flyer content within the "add-new-form" of the show?

Thanks in advance
mudds