Play heroes 2 and select MIDI music. exit heroes 2.
Execute H2CRK.EXE and patch the HEROES2W.EXE executable.
Copy the HEROES2 folder from the CD to the game directory (it should contain a folder called ANIM with some .SMK files in it).
Execute RegEdit and edit the hkey_local_machine\software\new worldcomputing\heroes of might and magic 2\1.0 key and change the CDDrive entry to the game directory drive.