I've a 64Gb but all my files are MP3
I've found that WMA or normally on CD's..........I'm not sure if WMA get picked up via the aux (it would detect it but might not have the codec to play it)
But I would of thought that it would bypass the WMA and just play the MP3
On all of that on some of my Floyd tracks (as I can see Clive you've got taste in music) from the wall, when the track reaches a lull it skips to the next track.
And finally yes there is a limit to the number of tracks, it's not quite track's thou it's the space they take