Yahoo Music service can be hacked by anyone to download all the music they want. Robert Chapin figured out how to do it. In a public press release he says, the flaw was discovered by his company, Chapin Information Services.

CIS initially reported flaws during day-one of the public beta period, but had found only installation and interface bugs. During additional testing this week, the Yahoo website exposed more serious design problems.

How it is done? I don’t know – P2PNet has a report on this, but I don’t really get it. Also, Chapin claims he has been emailing Yahoo, but no one seems to be responding. I have emailed Chapin to get further details!