jpelg,
Thanks for the great tips! By the way, I neglected to specify that I am doing my running on a treadmill in a gym that blares out Britney Spears through it's loudspeaker system, so I'm ok with the isolation that the Ety's give me. I hear no Britney, just what's in my little Nomad II which is in my T-shirt pocket while I'm running on the treadmill. It works very well.
For some reason, it seems that I'm not getting enough volume recently out of the Ety's. I think my hearing hasn't changed, and I've cleaned the little rubber earplugs. Is it possilbe that something is clogging up the metal (speaker) end of the Ety's? Is there a way to clean this? It looks fine.
By the way, I also use the Ety's on plane flights about once per month, mainly to watch laptop-based DVD's. Sound is great.
Thanks again for the tip on the Sony earbuds.
Maynard