Auralia 4 Professional Ear Training Software Complete Ear-Training Software for all Musicians Hundreds of exercises in 41 topics divided into 5 topic groups New version includes Windows and Mac versions in same box Professional version version can keep records on an unlimited number of users, and also has network functionality for the record keeping MINIMUM SYSTEM REQUIREMENTSWindows: Windows XP, Windows Vista, Windows 7, 512MB+ RAM, 200MB hard disk space, CD-ROM drive.Mac: Intel processors only, Mac OS X 10.4.11 or later, Mac OS X 1