Tom Lear asked, "Is there a player that has tempo control you
can adjust while it is playing, and operates in Windows?"

Yes there is. I use Winamp, with a plug in called Pacemaker.  Both are
available at www.winamp.com.  Pacemaker adds slider controls for tempo,
pitch and speed. Tempo and pitch are completely independent, and speed
effects both, like a variable speed tape player.

Wes Melander - 1970's employee of Grant Leonard

PS: Hi Grant, No, I don't have that Ampico playing yet!