You dont need to buy Partition Magic use XP to do this if you only want to divide the second hard disk into 2 partitions. If so make sure it has no data on it as this will be lost. (save everything onto the first (c:) Drive.
Click Start, click Control Panel, and then click Performance and Maintenance. Click Administrative Tools, double-click Computer Management, and then in the left pane, click Disk Management.
Right-click the drive and Choose Partition and set the size of the Partition and click OK when its finished click on the free space on the drive and make your next partition. Now right click on the new partitions and format them.
You cant safely move the Operating System but you could uninstall the Audio Program from Add/Remove Programs then Reinstall it from the cd and when it asks where to install point it towards one of the new partitions.