Ubuntu :: When Press The "effects" Button It Tells That Need To Install LADSPA-compatible Effects?

So I'm interested in using Jokosher as an alternative to Garageband, which is what I'm used to using for recording music. After messing around with it a bit I've encountered a couple problems.The first is that Jokosher doesn't seem to remember the audio input device I selected the last time I used it. This may seem like a minor complaint, but I like to use my computer sort of like a tape recorder - that is, I use it to jot down quick musical ideas for later reference. With Garageband my internal mic is automatically selected, so all I have to do is press record. With Jokosher, however, I have to select the input I want to use every time I open the program. This, to me, kinda defeats the purpose of using a computer as a quick note-taking tool. Is there any way to set a default audio device for Jokosher to use, or to somehow make it remember which device I selected the last time?

The second is that I don't know how to install effects for this program. When I press the "effects" button it tells me that I need to install LADSPA-compatible effects myself. I've done a little bit of googling and still I can't figure out how to do this or which effects I should get.