Well, now that I've heard your songs. I've noticed a pattern. You seem to just randomly place notes and patterns and then just reuse that stuff over and over. Especially in your "Jazz" song (which to be honest, sounds nothing like Jazz), which is not even long enough to permit such aggressive repeating.
The newest one just repeats the same simple rhythms over and over and doesn't use anything new. The new song may as well be 30 seconds long because of how much it reuses. This as a result, causes all of your songs to just be there, and not really impact the listener, thus causing the listener to get bored really fast.
So, don't get mad at me for what I said, just keep this in mind when you make your music, you need to spend much time and effort. Because as it stands, I have to state that these songs don't impress. Maybe listen to music and try to understand the structure that you want to shoot for more, and then try to make a song after you realize when its OK to repeat, and when you need to make new content that sticks out from the rest of the song (ever heard of a bridge?).
Oh and I don't know about you, but I have no problem uploading MP3 to SheezyArt.