IPad – Move files from CineXPlayer to OPlayer on iPad

I have found myself in quite a difficult position; before travelling I transfered some movies in the .MKV-format to my iPad-app CineXPlayer, unknowing that that app could not play that file.

Now I have no computer that I can use to transfer to another app, OPlayer for iPad, but fortunately, CineXPlayer offers an easy way to transfer files from device to device – unfortunately for me, I don't have two devices. It works by letting you access your files through your iPad's local IP-address via port 8080, and accessing it from an iPhone works fine, but not from the same iPad. Any ideas how I can do this?

Any other ideas as to how I can transfer the files from app to app? Both feature a download-function with a browser, so if I could access the local 8080-port, I should be able to transfer the files internally.

Thanks for any and all help/ideas/thoughts!