| 1978 | Analog stream from wireless radio | LEGAL |
| 1979 | Vinyl records | LEGAL |
| 1981 | Cassette tape copies | |
| 1986 | CD | LEGAL |
| 1999 | mp3 from Napster | |
| 2001 | mp3 from eDonkey | |
| 2002 | mp3 from Soulseek | |
| 2003 | mp3 from Kazaa Lite | |
| 2004 | mp3 from Suprnova (BitTorrent) | |
| 2005 | FLAC from OiNK (BitTorrent) | |
| 2006 | mp3 from Pirate Bay (BitTorrent) | |
| 2009 | Ogg Vorbis stream from Spotify | LEGAL |
A Brief History of Possible Music Sources
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