As far as I know the son (?) of Aldo Sinesio still owns the catalog, was planning to reissue things but that looks like it fell apart. Considering the depth of the catalog it is surprising to me that nothing has been really reissued. Two proposed Horo albums have been or are going to be issued: Milo Fine (Emanem) and Dave Burrell/Sam Woodyard (NoBusiness).
But those never came out in the first place, and I gather that the tapes came from the artists.