I have been on and off Linux for some time, now where this is at still isn't ready for prime time. You should be able to buy cheap off the shelf USB sound cards like DJ/IO and it should work.

Linux still has a way to go, hardware never works right or you have to use a card from seven years ago that people have finally figured out. Slamming together the gear is still much easier in windows due to device drivers.

When Linux is ready to go, like a take out window, I suspect there will be a DJ in every house, literally. Till then debating which program was first really doesn't get anyone anywhere does it?

Thanks for bringing that up – I changed this to read that they claimed they were the first multi-platform app.

Note that this is a version 2 release. I don’t know how the timelines of the two apps compare.

We’ve covered Mixxx previously.

Seriously?

Mixxx has been doing this for years.
http://www.mixxx.org/