I don't understand why I should have this problem when there has been so many downloads.
After downloading RuneAudio_rpi2_0.3-beta_20150304_2GB image and DD'ing it to the micro usb card, My rpi 2 gets 7 green blinks (linux image not found). I did this a couple of times with the same result. Tried a generic debian and no problems with the same card and process. I verified that the md5 was correct. So not sure what is the problem? Very reproducible for me. BTW, I'm on OSX.