Tedious Copyright Question

[Dirty0900]

At the minute, im trying to film a student dissertation film which hopefully will be done and dusted in a few days. However, afterwards i need to work on the soundtrack to it, and one of the songs that would be very fitting for it would be the unreleased song Dinner At Rods's from the Peel broadcast. Now, becuase we want to use it, we have to go through the entire artist clearance thing which is understandable, but where do i stand with wanting to use unreleased artist material? The closest thing it is to being on record is the start of the live Japan CD before JAL to Tokoyo kicks in. We do plan to send it off to people for various distribution when done, so we couldnt steal it without permission!

Answers on a postcard please!