Digitize your LPs and tapes
Good resource- To transfer audio from aging cassette tapes or records, you’ll need some basic audio hardware and recording software. Cassette Deck or Turntable The first thing you’ll need is a cassette deck that can play back your tapes or a turntable for your records. Any tape deck with audio-out jacks should work...Link.





Good resource for getting started in making your own DS games- Tutorial 1: Setting up the development evironment and building an example application that displays text output and reads the touch screen. Tutorial 2: Using the framebuffer mode of the Nintendo DS to draw to the screen. Also explains a bit about the Vertical Blank Interrupt. Tutorial 3: Detecting and acting on key presses.