Quote: ApoxodeThis is a fully mixed track. Please upload the stems.
Sorry. How do I do that?

Isolate each channel/instrument and save them as FLAC files until you have them all separated. In your case, OGG files might be the way to go.

Then put all of the separated channel/instrument files in a zip and add them to your upload.

For more info: http://ccmixter.org/thread/...

PS. If you save your fully mixed OGG into an MP3, people will be able to hear it.