Hi,
Maybe this will help :
Windows Media Player 11 Guide
http://vip.chowo.co.uk/wp-content/uploads/jaws/Windows-Media-Player-11-Guide.html
See "Playback controls area"
"seek slider. Pressing LEFT ARROW or RIGHT ARROW moves the playback backward or forward by one twentieth of the length of the track. If you add SHIFT or CTRL to these keystrokes, then the distance moved becomes one four hundredth or a fifth of the length of the track respectively."
You might get other options, such as suggested add-ins to control seek and or other methods,
by checking Media type forums.
Audacity - Forums
http://forum.audacityteam.org/
VLC - Forums
Sites such as these can also offer help.
http://forum.recordingreview.com/
http://www.djforums.com/forums/
You can find others by asking in those and by searching with Bing and Google.
Hope this helps.
Rob Brown - Microsoft MVP <- profile - Windows Expert - Consumer : Bicycle <- Mark Twain said it right.