Got something you think the world needs to hear? Thinking about podcasting? One simple solution would be the CME Matrix K FireWire Audio Interface. It features a built-in XLR combo input for microphone, guitar, or bass with +48 phantom power and gain control; a 1/8" TRS line input for an external audio source such as an MP3 player, also with gain control; 2-channel balanced 1/4" TRS line outputs with volume knob for monitor speakers; and 1 set of signal and peak LEDs for left/right input channels to ensure what you're wanting to broadcast to the world sounds the way you want it to. The Matrix K also has 2 headphone jacks (one 1/4", one 1/8", front and back respectively).
If you're ready to podcast, let your ideas enter the Matrix K first.