OPTIONS:
If you want SOtM USB card ($350) or internal HDD ($150 for 4TB) for music storage. Then you will need a larger case like Streacom FC5 ($290) or Streacom FC10 ($340).
I can acquire the parts and complete the build for you and only cost you the parts. PLUS, I can copy about 2TB of FLAC to the HDD at NO extra cost (I had to pay somebody for these music files. But I can include it in the server as bonus).