The remote and USB adapter are by L3 Systems.  The remote costs $150.00 for the two-button version.  The USB adapter is a bit more.  Check their website for more details:  www.l3sys.com

L3 Systems lets you buy directly through their website.

Winamp can be downloaded for free at: www.winamp.com

If the current version is too large and slow get the 2.0 “lite” version from www.oldversion.com

Windows Media Player 11 is free through Microsoft Update.  Note that you must be using Internet Explorer on a PC to access it. www.update.microsoft.com

Audacity, for editing sound files. Open-source & free!  http://audacity.sourceforge.net/

Buy-out music, for royalty-free music: Search Yahoo for companies. Take a look at www.freeplaymusic.com, as well as The Music Bakery.

There is music written especially for magicians. One company I’ve seen ads for in the magic magazines has a web page with samples, and the music is royalty-free once you’ve bought their CDs: http://www.opus1productions.com/

SoundPlant, for triggering random access cues:
http://www.soundplant.org/

Soundboard, also for random-access cues: www.zhornsoftware.co.uk/soundboard/index.html

Software for running the entire show, not just sound cues, can be found via John Huntington’s website:
http://www.zircondesigns.com/Manufacturers-ShowControl.htm

The high-end is available from Stage Research, Inc and is called SFX:
http://www.stageresearch.com
Be sure to check out the articles on how SFX has been used in various shows.