Your comments

Yes I created this as a Universal App

Not sure what you mean by Platform tags, but I don't think I'm using them

I only tested this with Conduit, not with Ad-Hoc. Not really sure how to test with Ad-Hoc...
Thanks for that, that was my problem I think - I'd created two different p12's and two certs from different profiles. Defintely a confusing process the first time around!!

By the way, really enjoying learning my way around Rarewire - it's a great App, and fun to use!
Thanks Ian

But the ad-hoc build is just for testing, right? How do I download an IPA ready for submission to the App Store?

When I go to General > Version History, I can see a number of items in there, including these types: Ad-Hoc Build, Live Update and Built for Store.

One of them is tagged as active_1.0, and all the others have 'promote' button next to them. What does the 'active_1.0' refer to, and isn't this where I would download the IPA from?
thanks for the speedy reply, Ian!

Out of interest is it likely that midi support will be added? I like midi files because they're very lightweight in terms of filesize