Well....I'm guessing you are spot on with the file line limit!
My m3u file hits the same limit if one more file is added....

Let's hope A.C. Ryan staff will confirm and make some changes to this

One further suggestion - the playlists we have been using to test so far are the extended m3u playlist files - the first line plus the comment line before each URL is the extended directive info. A simple m3u playlist is just list of file names / urls etc - so in theory an m3u playlist with 4096 tracks, one per line, could be generated for the POHD Mini. There's even a useful article on wikipedia http://en.wikipedia.org/wiki/M3U
Something to try tomorrow maybe, but if Roger or one of his colleagues could comment on the file limit, it would be useful

OK tried a basic .m3u file - the POHD mini sees it, no problems, so it is possible to squeeze 4096 tracks into a playlist. Still mistified as to the 12bit limit on the numberr of lines - wonder if anything else in the firmware hits this limit?