PocketMac has introduced its new RingtoneStudio for iPhone software for Mac. RingtoneStudio for iPhone allows users to create iPhone-compatible ringtones up to 30 seconds in length from “practically any” unprotected video or audio file. The program offers drag-and-drop ringtone creation from files 30 seconds or less in length, lets the user choose the 30 second ringtone clip if the media file is longer than 30 seconds, and automatically…