When dragging & dropping audio files that are on a CD (CDA) the user has a basic choice of four different strategies with which Nero can handle the CDA files. The strategy is selected on the CDA Options tab. You will see this tab in the 'New Compilation' dialog box which opens when you create a new compilation. If a compilation is already open, select your required strategy or check the selected strategy in the File menu with the Compilation info option.
The 'General Settings' section offers you a choice of four different strategies:
With this strategy the CDA files are buffered in Nero's cache directory if sufficient space is available. If no space is available then a track reference is created.
With this strategy the CDA files are buffered in Nero's cache directory if sufficient space is available. If no space is available, an error message is displayed.
The CDA files are handled as track reference. The source medium can only be a CD/DVD drive, not a recorder.
CDA files are handled as track reference where possible, otherwise the tempfile strategy is used.
The diskspace and tempfile strategies can be used to burn in 'Disk-at-Once' mode. We advise that you use one of these two strategies.
The reference strategy can only be used for 'Track-at-Once' burning and can only be read by CD/DVD drives, not by recorders. The reason why 'Track-at-Once' must be used with this strategy (it is preset) is that when you use files that are on an interchangeable medium you may need to switch the source CD if the audio files come from different source CDs or if a track has to be approached at a remote read position on the source CD. This can mean a long wait between tracks however. In the 'Track-at-Once' mode the wait between tracks can be any length of time without ruining the target CD.
The burning mode that can be used with the device dependant strategy depends on the source medium, i.e. if the tracks are from a CD/DVD player, then only a reference is created and only 'Track-at-Once' can be used.
The chapter 'Burning audio files from CD' explains how to burn compilations created with drag&drop editing.