An ASPI driver is required for digital audio extraction (DAE) or CD ripping. If Audio Converter is unable to find the ASPI driver ("Unable to initialize ASPI manager") please try this:
1) Download this ZIP file: http://www.audioconverter.info/downloads/nexitech.zip
2) Extract all files to a directory, for example: C:\Nexitech\
3) Execute: C:\Nexitech\aspikit.exe
You can use WinZip to work with ZIP files.