If you want to get your Firebox working with Fedora, this is how I was able to do it. This may also work with other Presonus audio interfaces.
First of all you need to install the CCRMA repository for your version of Fedora.
Here's a link to the CCRMA Fedora index. Since I'm using FC 11 x86_64 I used
this one. This is a well known repository for audio work.
If you have jack installed already, then you'll need to uninstall it. Open add/remove software, search for FFADO and install it. Basically, FFADO is Freebob under a different name. One difference is that FFADO uses the new firewire drivers and Freebob uses the old ones. As of this writing, it's still in the experimental stage, but in my case it works. Now, install jack2 (which I will just refer to as jack). You can't just do a search for jack2, it's called the-jack-audio-connection-kit-1.9.x.x. Don't get this confused with jack1, which is the-jack-audio-connection-kit-0.116.1. Be sure to install FFADO before you install jack. I also recommend installing qjackctl because it will make your life a lot easier when configuring jack.
Now, you need a real-time kernel. I could not get any of this to work without one. Do a search for kernel-rt and install the real-time kernel. In my case it was kernel-rt-2.6.29.6-1. I also had to install the kernel-rt-devel because I'm using akmod for my nvidia driver. Now just reboot and you should be able to boot into your real-time kernel.
Now, to configure jack. Open qjackctl from applications>sound and video. Click setup and you'll see several options. For driver select "firewire" and under parameters check "realtime". Server path should be "jackd". The rest of the settings should be fine, but I have frames/period set to 128. If you're having trouble, you might want to set this to a higher value. Don't forget to start jack.
Now, you should be able to play some tunes! Just make sure that whatever media player you are using outputs to jack. In my case, I'm using the qmmp media player and it works flawlessly.
That's it for basic sound. This will probably be enough to get you up and running with Ardor as well. You might also have to configure the patchbay, but that is easy enough.
Unfortunately, these steps will not get you system sounds or sound from YouTube videos. I'm still working on a solution for that.
I hope someone finds this guide useful. If I missed anything, or if you have anything else to add please do.
Regards,
rokit