Dude - the link in your signature is pointing to a now-defunct Mobile Me site - suggest you update it.
Well thank you for the suggestion ... but if you read the posts it says it's down while I transfer hosting services etc. I bin a bit busy
Wunderlich 'Home Page" ... I'll be at Wunderlich DE next week
I don't think that the air tube system will ever be as good as in ear speakers for quality of sound

But on a motorcycle at 40mph and above would you be able to tell the difference? Would it matter?
Sat at home listening to the HiFi yes indeed ... but on a motorcycle?
Any music I listen to while riding the 'bike is usually at quite low volume and is there as 'background music' My main priority is riding my 'bike, enjoying the cornering, planning, razzing
That said, a few people, me included, reckon that the air tube sound monitors I use are better than the standard iPod/Apple ear bud music thingies


. I got mine from Asda direct for about £12 each, bargain