The file extension M2A identifies audio files in the so-called MPEG-2 audio format. These files are mostly used in video editing and are created by demuxing (demultiplexing) container formats together with a m2v file.
The MPEG-2 audio compression method is multi-channel capable, which is why it can also be found on some DVDs.
In principle, most players should be able to handle M2A files. However, if the extension M2A is not recognized or it does not appear in the file chooser, changing the extension to mpa or mp2 can help.
M2A files are also referred to as Apple MPEG 1/2 audio files. In addition, M2A files are often referred to as MPEG-1 Layer 2 audio files, but their extension is mp2.
Most often resolving problems with opening M2A files is very simple. Just install an appropriate program that supports such files. All of the listed programs support M2A files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of M2A files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate M2A files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the QuickTime applications is not on the list, select "Browse" option in order to manually locate the directory where QuickTime has been installed.
Sometimes problems with opening M2A files may not lie with the application itself, but can arise due to other causes, such as: