Beosound 2300 is not compatible with N.MUSIC (Beolink PC2, Beomedia 1, Beomaster 5).
Certain versions of Beosound 3000 and all Beosound 3200 are compatible.
Neither Beosound 2300 nor Beosound 3000 have a memory for storage.
Beosound 3200 has a Hard drive, but you can only rip a CD that you insert in the Hifi itself, you cannot access the HD from a computer.
Only the Beosound 4 has a removable SD storage.