Swap Magic doesn't
read anything.
If you mean, can your PS2 play DVD+RW backups, I don't know. It heavily depends on your PS2 version, the Slimlines mostly run DVD-Rs flawlessy.
If you are that curious, you can try to see if your PS2 can run it.
my ps2 can read DVD+RW movies but when i burned a game on it and played it threw Swapmagic it only worked a little bit
And WTF are you talking about Swamagic cant read anything