A rather extensive FAQ is available at the SH/SC Wiki.

General

Which version of foobar should I download?

It depends on you. If you're a serious music listener who's interested in having total control over every part of its playback, go ahead and download the special version. If you just need a music player, download the Lite version.

Is foobar still under active development?

Yes. Version 0.9 will soon be released. For more information, see these threads:

Playback

There are multiple output methods available: DirectSound, waveOut and Kernel Streaming. Which one should I use?

A: The default setting (waveOut) is recommended; it should be safe to use anywhere. DirectSound result in better performance (less CPU overhead)—especially under Windows 2000, Windows XP or newer—but there shouldn't be any audible difference between the two. In certain rare cases, Kernel Streaming may produce better results than DirectSound/waveOut (if for some reason you need data sent through digital out to be bit-identical to source stream); however, bit-identical results with DirectSound have been reported on soundcards capable of mixing multiple streams in hardware (with hardware mixing enabled in DirectSound settings).

Please note that Kernel Streaming is an experimental feature with known issues, and using it is not recommended unless you have a clear need to do so. Most of perceived "sound quality differences" between DirectSound and Kernel Streaming are related to the fact that Kernel Streaming usually bypasses the Windows volume control. In addition, Kernel Streaming only works on Windows 2000, Windows XP or newer.

How can I send my files from Windows Explorer into a specific playlist, so as not to erase my current playlist?

Preferences → Core → Always send to playlist (playlist name)

How do I create a temporary playlist?

Use foo_temple.

Look & Feel

How can I get G-force in a panel or a tab?

To get G-force without any edges, or in a tab/panel, follow these steps:

Open the Documents and Settings\<your Windows username>\G-force folder
Open the Preferences (foobar2000).txt file and change the line NoBo=0 to NoBo=1

You won't be able to resize the window, so set the position and size of the window carefully. To put it as a tab, just create a fake tab called G-Force and place the window (the window without borders will take the place of the window with borders included before the change).

I just saw a great looking foobar2000 window, but I don't know how to get mine looking the same way! Is there no hope for me?

Of course there is! Simply take a look at these links:

Is there a way to make MSN Messenger's "Now Playing" show the song I'm listening to with foobar?

Yes, through plugins:

AMIP
foo_msn

I have seen some people using something which pops up to display the song being listened to. Where can I find it?

It's called [http://www.hydrogenaudio.org/forums/i