Notes about the IDSP file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The IDSP file type is primarily associated with 'Gamecube' by Nintendo. This is a streamed audio format used be several Nintendo Gamecube games. For playing in_cube is a Winamp plug-in intended to play streamed audio formats from the Gamecube system although that is being replaced with vgmstream. The Extended Music Script can be used to play this and many other such formats.
Detailed information for file extension IDSP:
File classification: Audio
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.