P

peer-to-peer

A computer network that uses the computers on the "edges" of the network rather than a central point or the network itself. In short, peer-to-peer takes advantage of all the computers on the network to speed things up.

plug-in

A piece of software that can be "plugged" into an existing program to modify it in some way.

podcast

A digital broadcast that can be loaded onto a digital music device, such as an MP3 player.

podcatcher

A piece of software (also known as an aggregator) that goes out on the Internet and finds podcasts for download.

podwaves

An analog to airwaves.

preamp

Stands for preamplifier, an amplifier that comes before another amplifier. In the case of podcasting, the preamp usually powers the microphone.

P2P

See peer-to-peer.