Tinnitus follow up:
I wanted to ammend my previous assertion that music can distract a focus from tinnitus, and perhaps lessen its effect. If the outside sound can be isolated enough, then perhaps this is a viable strategy, but you should set the volume on the ipod to a soft level prior to starting the ride. If you can't hear the music once under way, then perhaps straight plugs represent a better hearing protection option. Yes, I hear tinnitus more when plugged than when music is playing, but now I believe the damage post ride could be worse if using music during the ride.
I rode about 8hrs last week, with music playing, and noticed bad tinnitus for a few days. This week I went plugs only for a couple hour ride, and although I heard the ringing during the ride, post ride it did not seem as bad. Well, I just finished mowing the lawn with ipod, had to push the volume a bit to overcome the mower noise, and the ringing is back. So, now I am thinking heavy isolation may be the better strategy, unless low level music can be used. Luckily I am not full blow 24/7 tinnitus and may still have time to find an acceptable method to keep riding and listening to music. I also thought of giving up music all together, but have found that short sessions (off the bike), on very low volumes does not cause a tinnitus flare up.