Well I got my Karma yesterday and transfered all my old EAC/LAME APS files to the player and so far so good.
You will hear very very short gaps b/t tracks if you fast forward through a song to the end just before the transition to the next. A buffer issue probably, but listening to an album straight through I haven't heard a single gap...yet anyway.
The crossfading feature (set to 1 sec.), used when shuffling and listening to all of the tracks on the player is an excellent feature and works very nicely. Very smooth and relaxing. Even transitions between Miles Davis and Nirvana aren't jarring.
*I still need to take it through some more stringent tests, as I never bothered putting my live CD's on my JB3, because the annoying clicks/pauses during transitional jams. Use on a portable CD player only. So I will have to check that out. Breaks/Pauses are generally more audibley apparent on those albums, than say a Beastie Boys or Digiable Planet Album. I don't listen to techno or DJ mixs, so that I cannot really test that genre.
**I need to test the shuffle all tracks playback without the crossfader on, to see how it performs in that respect. Just turned it off, so I will have to wait for the right songs to come together consecutively a few times when listening carefully to be sure.
***I also need to get a better pair of cans so I will here more detail than the KSC75's I am currently using.
Will do more testing are try to come up with a comprehensive review of the Karma gapless playback abilities when playing LAME encoded 192kbps VBR stereo Mp3's after a new pair of headphones becomes afforable and I have had time to thoroughly test different types of playback extensively.
Overall though, I am extatic. My listening pleasure with the Karma is great so far. The player is a litle thick, but still pocket friendly. The ergonomics for one-handed (right) is very nice. The way you hold it while navigating feels very secure and less prone to drop (knock on wood), because you actually grasp the entire player instead of "finger tip it". The rubber side panel helps too. Great first impressions.