I actually tried this with dark side too. I have dark side on my hard drive in a bunch of different encodings (wav, cbr mp3, vbr mp3, flac, ogg, lame with nogap, lame without nogap. ripped as one track then separated, ripped as separate tracks, encoded as one file then cut up, etc.), just so I can test what I need to do to my music for different players to play gapless. With the Karma, I didn't have a problem with flac or wav and with the new firmware, didn't have a problem with ogg, or really any of the mp3 versions. I'm really pleased, yet at the same time surprised that this is such a big challenge for other players, and that it's taken this long to make it high enough priority to work around these inherent mp3 limitations.