  There is a well-established procedure of assigning a strong homotopy Lie
algebra of local observables to a multisymplectic manifold which can be
regarded as part of a categorified Poisson structure. For a 2-plectic manifold,
the resulting Lie 2-algebra is isomorphic to a sub Lie 2-algebra of a natural
Lie 2-algebra structure on an exact Courant algebroid. We generalize this
statement to arbitrary n-plectic manifolds and study automorphisms on the
arising Lie n-algebras. Our observations may be useful in studying the
quantization problem on multisymplectic manifolds.
