However, there are a few minor bug with the track-strings (TRACK/ARTIST/ALBUM):
- The strings don't always refresh, but pressing play/pause solves this problem.
- Showing some special characters is not handled. The iPod sends al characters as unicode. They need to be converted.
- Now I use the ATMega644P. This one hase more RAM; I can use 10 bits A/D-samples now.
- The output scale of the spectrum is now logarithmic. The spectrum looks better now.