hello, the fault of my bad English, I realized only after loading the songs on Mixter can do only the remix! is not there a way to upload original songs just for listening and downloading? plus the uploader does not take me the link of my album, but only to a beautiful day, a song that I have an album by various artists, if you can not leave the original tracks will be forced to remove them, sorry but I did not understand well how Mixter

You can certainly upload original songs, but since this is a remix site, what you would do is upload both the song itself (as a preview) and also the tracks from the mix.

That allows people to remix your original song, and create some excitement around your piece!