As written, the Free Music philosophy refers only to noncommercial uses of music. Even though the Free Music Philosophy does not concern itself with commercial uses of music, the removal of restrictions on noncommercial use will go a long way towards making music more free than it is already. Given the nature of the expression, and the current laws governing it, I argue this philosophy is adequate for now.
Music is different from software in many respects.
In the case of music, these are two different copyrights, and they are offered different protections. Since it is not common for people to need to modify musical compositions, the abridgement of the freedom of creating derivative works is minimal. This is not to say that the use of music couldn't be more free, but not abridging any freedom for noncommercial use is a big step in the right direction, with the possibility that a compulsory licensing scheme, or a tariff-based scheme, can be extended to free music for commercial uses also. The Free Music Philosophy not only illustrates the ethics of this issue, but also serves to counter the music industry propaganda in this regard. According to people connected to the music industry, there are many bands who have self-released albums, or have even released them on major labels, but they either have not sold as many copies, or more importantly, they've not seen revenues from the sale of even a single copy flow directly to them.