Hey all, If I might give a shameless plug to an open-source project for a moment... I wrote FlacSquisher to provide a simple solution for encoding my music to a lossy format after ripping to FLAC, so I could fit more than four albums' worth of music on my 2GB Sansa. It supports Ogg Vorbis...

I just ordered a pair of Audio Technica M50s, in part because I heard they run well unamped. I'm curious how well though... Would a CMoy or a Fiio E5 make any noticeable difference in the sound of an M50 (other than volume), or does this headphone run well enough unamped that I would need to...