This is a system utility that I use all the time for audio, and other as well...
It's great for auditioning samples or loops down a folder or two...More than that you simply left click the WAV & it opens up in default player...
Often I can't remember where I left off or which sample was the right one to choose, so I KO Approach it...
The kick is you left click on a folder & hold that click down a little longer & that starts the navigation process...No buttons to find in the tray or anything else.
Moving around any ZIP files are treated as folders & instantly opened (if you want) You can also view some image files (But not ones in ZIPs). If you get to a folder you wanna open you just double-click it & it opens in the folder view you started from...Left click on files opens in default app and right click gives you the explorer context menu.
Pure genius really...Here's application for AUDIO-

This is PRESENTLY a commercial product which covers windows 2000 thru windows 7 32-64bit...
But...BUTT! the initial versions to 0.2.1 were FREE & still grabbable on the wayback or attached HERE....
Old info page-
https://web.archive.org/web/20060413192842/http://www.koapproach.com/Download link for old 0.2.1-
https://web.archive.org/web/20060701054348/http://koapproach.com/apch/Approach_0-2-1.exeThis launcher gets cheaper all the time but this freebie is all I need using XP, in any case the current page is here-
http://www.ko-sw.com/Products/Approach/Very Useful in many ways....