The legality varies by country/region and is a bit fuzzy, as with many media copyright laws.
For example, in many countries it is allowed to copy media for personal use, if the artists have received a "fair compensation" already, which could be assumed they already did with a radio broadcast? Also, importers and manufacturers of recording devices/media in both the EU and US (mp3 players, CDRs, DVDRs) are charged a special royalty, part of which is divided between copyright holders, record labels, music publishers, etc. All that makes it theoretically legal to copy digitally broadcasted media only for private use, if there is no copyright statement otherwise prohibiting it. However, it is still a matter of legal debate and not certain. Copyright law is extremely complex. It's so complex that lawyers, lawmakers, and experts heavily argue over how it's interpreted and applied. Still, if you commit a copyright crime, you can't use ignorance as an excuse :/
The big ones to remember are:
- It is illegal to circumvent any protections that are put in place to prevent duplication.
- It is illegal to copy any media that has a copyright statement saying it is illegal to copy it.
- It is illegal to distribute media once copied for personal use.
Disclaimer: I'm sure I've missed something, this is just my understanding and should in no way be considered legal advice
