FiiO X5 Portable Player Firmware 2.4

Fixes:

- Removed 5800 track limit to media library scan.
- Added playback support for multichannel recordings.
- Pressing the Back button from the Now Playing screen will now always take you to the folder / album / etc. from which the current song is selected. This is true even after navigating to the main menu or powering the X5 off and back on.
- Added option to display song title instead of filename in Now Playing screen.
- Added Sleep timer, with on/off toggle switch and timer setting.
- Preset EQ settings may now also be adjusted.
- Added option to play through folders: ie skipping to the first song in the next folder after the last song in the current folder.
- Added option to delete a whole folder.
- Added function to delete tracks from within a playlist.
- Optimized playback of AAC, FLAC and M4A.
- Fixed issue where shuffle mode reverted to the same set of "random" songs if starting from the same song.
- Various bug fixes.