I'm using the Linux Kernal 2.4.22-14-rt, which is realtime (for audio).

What are the downfalls of using this kernal over the default one? I installed it using sudo apt-get install linux-rt .

dont know but if theres any problems you can always just select your normal kernel from GRUB

And how does one uninstall a kernal if they don't want it any more?

>And how does one uninstall a kernal if they don't want it any more?
With apt-get remove linux-2.4.22-14-rt --purge (you can also use dpkg to remove a specific version, e.g. dpkg -P linux-2.4.22-14-rt ).