Seems like a Beta release!

I was able to process only two songs out of the sixteen I tried. The rest either hung up in processing or gave me an error message "Song not available - please try again later". Since processing takes a couple of minutes, you will probably get very frustrated at this. The progress bar needs work. It is a circle that lights up in segments as various stages begin, but it does not increase gradually to tell you how far along it is. I would give it only two stars, yet I want to encourage this developer to keep refining the app. When it does work, the results are phenomenal!

Ricardo Canada about Jamn Player:, v1.1