I found an interesting little tool, which is written in flash. Just kind of 'poking the waters' to see what is out there. The demo I am showing here will download each of the recorded tracks (MP3 format) from the server to your browser's cache and then the flash mixer can be used to mix those tracks. Each of the mp3 tracks is around 5~7MB each, depending on the song duration. Once your browser caches the files, it no longer needs to download them for further playback later. The mixer is very basic, up to 8 stereo tracks, which are already panned when I exported them from 96/24 waves. User can adjust the mix and there are 'mute' buttons for each track. Try it!

Run To Me  Walk the Parrot  Winter Solstice