Release 3.60 introduced the sequencer. It can record and play back events for the following parameters:
master volume & pitch
scratching
(turntable) volume & pitch
triggers
loop (on/off)
sync client settings
muting
all parameters for the effects. This includes built-in effects (lowpass and echo) as well as LADSPA plugins.
To record events simply press the Record button of the sequencer, then press the Play button. All actions (for sequencable parameters - see above) you now take will be recorded into the song list. Press Stop and Play again to see/hear how terminatorX plays back the events recorded before. You can now record events again for e.g. another turntable or record other parameters for the same turntable - whatever you want to do. Recording events for parameters for wich events have been recorded before will result in dubbing: if you touch a parameter while recording, events previously recorded will be erased from the moment you touch the paramater until you stop recording.
When recording long sequences/songs you can use the sequencer-scale to start recording/playback from any song-position you want. To record a single paramteter value at a certain position simply move the sequencer-scale to that position, press Record, set the parameter and press Stop again.
There is no other the way to edit the sequencer events currently, but future releases may feature an event-list editor.