I usually disconnect Lyr from Bifrost and then connect Bifrost to Lepai T-amp.     Computer - Bifrost  |-> [in] Lyr -> Headphone                             |-> [in] Lyr [out] -> Lepai T-amp  - Speakers      

Just stumbled upon U2 Flac albums on their official website. Price seems reasonable too :)    http://u2.fanfire.com/cgi-bin/WebObjects/Store.woa/wa/artist?sourceCode=U2TWEBWWUSD&categoryName=Music%3A%3ADigital+Downloads&artistName=U2com

I bought the TripleFi 10 from Amazon deal last year and was using them for couple of weeks. I don't keep my ipod volume more than 30% on normal earphones/headphones. But as TF10 are IEM's with the same volume, I have developed minor tinnitus. If I try hard to hear that 'ringing' sound I can hear...