Looks like duplicates are allowed, so instead of upvoting previous posts, I'll just dump my wishlist here.
  1. Artist/All Tracks currently sorts by track name. It would be great to be able to sort by album year + track number, so that tracks come in chronological order.
  2. Please add the ability to save & restore equaliser presets.
  3. I wish I could play CUE + image files as in the desktop version.
  4. Some way to show track lyrics, for example when clicking on a cover in "currently playing" screen.
  5. Ability to change playback speed would make mobile foobar2000 a great audiobooks player.

P.S. Main site foobar2000.org is under SSL protection, even though it doesn't have a login feature. Forum on the other hand does, but uses plain HTTP.