You can use jaLCDs for this. The only thing you need is a source - for example a text file which contains the informations you want to show on the display. Your MP3 player or whatever has do write this file.

To read characters from a file you would use the command below:

$part:14:4:$linefromfile:C:\your_file.txt:5§§C

Which means:

Placing cursor to position X
This number declares where to place the cursor within the file. The cursor will start on the left side and will jump 14 characters to the right.

Read in the next X characters
This number declares how many characters will be read from the file. The current position of the cursor is the startpoint. Here it means to read the next 4 characters.

Jump to line X
This number declares in which line the cursor will be placed. Here it means line 5 with the first temperature value.