Tracktion Waveform Midi Instrument Location and Importing

Hello, I’m new to Juce, and Tracktion’s Waveform FREE daw. I have had experience with Audacity, Sonar LE, and LMMS, among a few others i haven’t used much.

I was hoping there was a way to import instruments for use with Waveform’s midi tracks, but i can’t figure out where the folder is for the instruments native to Waveform is, let alone what file format it uses. LMMS uses .xiz and .xpf for its midi programming, are those compatible with Waveform?

If not, is there a place to get more midi instrument libraries?