My media burner deleted all of my music?

I have an Iphone 4S and I have an app called media burner, that i've had for a while. It had deleted all of my music on it before, so by memory I redownloaded all of the songs to it. Unfortunately this happened again, and I had a lot of songs on it. How do I get my music back? Or at least how do I find out what songs were on it so that i can redownload the songs?

Haven't you synic you're phone to the cloud or ITunes? If so they should be there

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