I'm about to get a Nintendo DS (not DSi or Lite). So I decided to use it as an mp3 player as well. I'm looking for a 3rd party cart that can do that. Fortunately I found many. Unfortunately I don't know which to get. Currently I'm looking at a CycloDS Evolution for this purpose. I am quite open to other suggestions. What I am looking for has these qualities:
UI can (should) be able to be worked entirely from touchscreen.
Play mp3s (I know obvious, but still)
Can control various settings like screen brightness. (optional)
Homebrew isn't a big issue at all. (unless there is one that allows me to connect and surf the internet, which for the DS is unlikely)
Will not mess with the firmware on the DS itself so I can play other games (like Golden Sun DS when it comes out).
If anyone has messed with one before I would like to know how it went. At one point in time my brother also had a DS with a specific music player that used both Slot 1 and 2. That would be pretty much what I would be looking for, but neither can I remember its name nor can I find it.