I plugged my headphones into my vcr (with an adapter) so I would be able
to hear videos better when working out on my treadmill. (Between the noise
of the treadmill and the fan, I have to turn the tv's volume all the way
up to hear it, and the speakers are starting to show distortion, ie,
they're getting blown. I thought headphones would be a better way to
listen.)

However, the sound is very soft, so I guess some amplification is
needed. Is there an inexpensive way to do this? Do I have to buy a
stereo amplifier, or is there something simpler and cheaper that would
do the job? The headphones I'm using have their own volume control, btw,
and I had it all the way up, but it didn't help at all.

Thanks,

J. Wermont