If you are a musician, or have music that you created, upload it!
If you have a DJ mix, upload it! Do it like you would on YT, that is make a 'video'.
If you have never made a video, using Windows Movie Maker is very easy. Just import the audio file, import the image file, drag them into the timeline, stretch the image to the length of the audio, save it.....you have a video!!
There are no time limits on here, unlike YT, so you can post a good long mix for others to enjoy.
I would love to know what you think of the site and where it can be improved. Be it the look or the content. Remember, this place is in its infancy.... We can ALL make it better!