When you make the file, is it with Microstudio? I'm not sure that I understand what you are saying.
I assume that you own Microstudio since your question is in that forum. Do yourself a favor and play the file using Microstudio. It's really easy to use. A small number of files drop out with a second or two to go, but that is a very small percentage of the files out there. It probably won't affect your songs. So I recommend using the play function that comes with Microstudio. I can't really give advice about Winamp.
