Complex sentence: They had recently acquired Brunswick Records along with four music publishers for US $28 million (equivalent to $million in) and were eager to promote this material for the sales of sheet music and phonograph records.
Split into simpler sentences: They had recently acquired the ownership of Brunswick Records along with four music publishers for US $28 million (equivalent to $million in). Consequently, they were eager to start promoting this material to cash in on the sales of sheet music and phonograph records.