The file with the ACD file extension is a format that has been used by the ACID Pro. This file format of ACD comprises of audio tracks, effects, loops, volume and pan adjustments, along with several other setting details for the project. Sonic Foundry initially created the ACID Pro back in the year 1998, however, it was later acquired by Sony.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .ACD file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .ACD file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .ACD file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.