Ever
since Napster's downfall, Web users have been
searching for alternatives. One of the most popular
is AudioGalaxy Satellite, which similarly lets
you download music tracks. You can search for
artists, tracks, and albums.
This program uses a Web-based interface along
with a "satellite" application on your
PC to handle uploads and downloads. The benefit
of the satellite applet is that AudioGalaxy can
schedule downloads to happen in the background.
The service tells you all the songs available,
even if the owner is not online at the time. When
the file becomes available, AudioGalaxy will download
it as long as you leave the satellite application
running.
The downside of AudioGalaxy Satellite is that
the system might have grown too big too fast:
Pages refresh slowly and sometimes not at all.
However, the program has a lot of useful features
to address this: You can stop downloads in midstream
and resume them at a later time. And you can make
requests for programs that aren't currently available,
so that once a person comes online with that file,
you can automatically download it from them. Finally,
because the program is Web-based, it consumes
little by the way of CPU power or memory, so you
can always keep it open--and check throughout
the day to see if the program you're looking for
is available.
learn more about p2p
A peer-to-peer (or P2P) computer network is a
network that relies primarily on the computing
power and bandwidth of the participants in the
network rather than concentrating it in a relatively
low number of servers. P2P networks are typically
used for connecting nodes via largely ad hoc connections.
Such networks are useful for many purposes. Sharing
content files (see file sharing) containing audio,
video, data or anything in digital format is very
common, and realtime data, such as telephony traffic,
is also passed using P2P technology.
A pure peer-to-peer network does not have the
notion of clients or servers, but only equal peer
nodes that simultaneously function as both "clients"
and "servers" to the other nodes on
the network. This model of network arrangement
differs from the client-server model where communication
is usually to and from a central server. A typical
example for a non peer-to-peer file transfer is
an FTP server where the client and server programs
are quite distinct, and the clients initiate the
download/uploads and the servers react to and
satisfy these requests.
Some networks and channels, such as Napster,
OpenNAP, or IRC @find, use a client-server structure
for some tasks (e.g., searching) and a peer-to-peer
structure for others. Networks such as Gnutella
or Freenet use a peer-to-peer structure for all
purposes, and are sometimes referred to as true
peer-to-peer networks, although Gnutella is greatly
facilitated by directory servers that inform peers
of the network addresses of other peers.
This article is licensed under the GNU
Free Documentation License. It uses material
from http://en.wikipedia.org/wiki/p2p.
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