Hydrogen drum machine

anyone ever used this?
http://www.hydrogen-music.org/

General

* Very user-friendly, modular, fast and intuitive graphical interface based on QT 3.
* Sample-based stereo audio engine, with import of sound samples in .wav, .au and .aiff formats.
* Support of samples in compressed FLAC file.

Sequencer and mixer

* Pattern-based sequencer, with unlimited number of patterns and ability to chain patterns into a song.
* Up to 64 ticks per pattern with individual level per event and variable pattern length.
* 32 instrument tracks with volume, mute, solo, pan capabilities.
* Multi layer support for instruments (up to 16 samples for each instrument).
* Ability to import/export song files.
* Unique human velocity, human time, pitch and swing functions.
* Multiple patterns playing at once.

Other

* JACK, ALSA, PortAudio and OSS audio drivers.
* ALSA MIDI and PortMidi input with assignable midi-in channel (1..16, ALL).
* Import/export of drumkits.
* Export song to wav file.
* Export song to midi file.

I was going to, but I failed to get JACK set up, so I gave up and stuck to hardware

Yea, it's really awesome.

It reminds me a lot like early versions of fruity loops.

For a drum sequencer, it's great. Easy to edit tweaks in the pattern. And of course soundset is somewhat of a non-issue as you can load in whatever sounds you want.