If you want your track to get played on Remixta. Easiest way to do that is just post it in this forum and provide downloadable version with at aleast 192kbps MP3 quality.
If you prefer something more direct then best way is to use soundcloud drop box. Please fill in as much data as possible, it’s all helpful for me.
http://soundcloud.com/remixta/dropbox/
You don’t need to be registered with soundcloud to use it.
You can also look me up on Renoise IRC channel (with nick Suva) or send me Private Message on these boards.
Also remember that I won’t play all the tunes sent to me, the selection is based on many things, including the track quality, suitability for current show and just randomness as well. The show time is limited, if I get 3 hours of great music in a month, I can’t play it all.
Edit: Changed dropbox link.
