here is an attempt of simplification after a long hangout with @dengemann

https://github.com/agramfort/mne-python/commit/fdb91a41ecccaad98c3ba9b427a2d47b7a39ec1c

I'll continue tomorrow unless denis get's bored by science :)

we need to add the mne.filter_events function. Something like:

events = mne.filter_events(events, event_id=dict(aud_l=1, aud_r=2))