Akamai even turned the trick into a profitable business by building a network of servers situated within the networks of other companies into a sort of meta-network, which it uses to speed the delivery of its client's content.
Regardless of what option they choose, a label should create its own digital files (WAV files that can be converted into other formats) and its own meta data -- it's not rocket science and a label knows its own content better than any third party.