As i'm on mac too, i use iToner 1.07 to upload ringtones to the phone. Edit music with Logic Pro 8.

You can upload your mp3 songs via iTunes to your iphone and use Ringtones application to convert your selected song to ringtone.

Add this to your sources in installer.

http://i.danstaface.net

As to games, Parking Lot is nice and Lexitron is pretty challenging. Another game is Gemlogic and Amaze.

Software...Fring, BossPrefs, SMBPrefs, SwirlyMMS, Snapture, Categories and more..

Using default theme and also TransformersM theme.

Cheers