Audiovox CDM-9900
Tweaking Custom Ringers
But I don't see any value in it. 😛
While listening to certain default Media gallery ringers, if you have the "Options" menu, go into options, and you can adjust Tuning up/down, or Tempo up/down.
Can't save the adjustments, but you can sure make them sound weird while previewing. As if they don't sound stupid enough already. 🙄