  A weight function which $q$-generalizes the ground state wave function of the
multi-component Calogero-Sutherland quantum many body system is introduced.
Conjectures, and some proofs in special cases, are given for a constant term
identity involving this function. A Gram-Schmidt procedure with respect to the
inner product associated with the weight function is used to define orthogonal
polynomials in one of the components, which are conjectured to be the Macdonald
polynomials $P_\kappa(w_1,\dots,w_{N_0};qt^p,t)$, and a proof is given in a
special case. Conjectures are also given for an adjoint property of the
Macdonald operator with respect to the inner product associated with the weight
function, and the normalization of the Macdonald polynomial with respect to the
same inner product.
