Shnabubula released a small collection of chiptune tracks over @ VGMix X in both NSF and MP3 format.
So I’ve been getting into MML, here are a few NSFs I made:
http://arnoldascher.com/Chiptunes/Shapeshifter.nsf
http://arnoldascher.com/Chiptunes/PSJR.nsf
http://arnoldascher.com/Chiptunes/Dark%20Verizon.nsf
and in MP3 format:
http://arnoldascher.com/Chiptunes/Shapeshifter.mp3
http://arnoldascher.com/Chiptunes/PSJR.mp3
http://arnoldascher.com/Chiptunes/Dark%20Verizon.mp3
Hope you enjoy!