Thanks a lot! :) In reply:
- If you don't have IPFS running, audio is sent to some gateway and will be spread through the network to whom ever likes the track if they have IPFS running, if not it will survive in the network for some time until there is no blocks anymore on any of the nodes. If you have IPFS running the it's the same, but you upload locally and the network will come to your IPFS node to forward your content to the other nodes, and if they like it the also serve it from then on...
- If you set it up correctly There is no major concern as of now.
- The best is to have IPFS locally, the more nodes there are, the faster the network!
Obrigado! :)