open compressed .wav files in Sound Recorder, the audio codec used by the file must be installed in the Audio Compression Manager (ACM); Windows installations dating back to at least Windows 95 came with a selection of standard codecs that included Truespeech, GSM 6.10, G.723.1, IMA ADPCM and CCITT A-law and u-law, with additional codecs being added in later editions. Starting with Windows Vista, Sound Recorder saves recorded audio in Windows Media Audio (.wma) files instead; the exceptions to this are the Home Basic N and Business N editions, which continue to use .wav. Also, audio metadata such as Artist, Album, Title, and Genre can be added to the sound file directly while saving the file. Voice Recorder in Windows 10 only records audio in MPEG-4 Part 14 (.m4a) container formats. Issues Versions of Sound Recorder before Windows Vista recorded audio to memory, rather than to the hard disk, and the length of recording was by default limited to 60 seconds. Microsoft recommends recording 60 seconds and pressing the Record button again to record another minute. In addition, it is possible to use the Sound Recorder's concatenation feature to increase the length of the audio file. For example, saving an initial 1 minute recording as "1min.wav" and then inserting the "1min.wav" file 9 times creates 10 minutes of recording which can then be saved as "10min.wav". This "10min.wav" file can then be suffixed to itself 5 more times (or as many times as there is room in memory) to create a "1hour.wav" file. By recording over any of these longer sound files, Sound Recorder can have an uninterrupted arbitrary recording time (limited only by primary memory). In 32-bit versions of Windows before Windows Vista, on computers with more than 2 GB of RAM, after recording (but not when playing), Sound Recorder will return an error message indicating that there is not enough memory. This is a design flaw of older versions of Sound Recorder and officially cannot be resolved except by reducing the amount of available physical memory. There does, however, exist an unofficial patch that resolves this problem. Another solution to the 'not enough memory' error is to run the program in compatibility mode. This can be achieved by right clicking on the .exe file, then selecting: properties, compatibility tab, 'run this program in compatibility for', and selecting the appropriate option, such as 'Windows XP Service Pack 2'. The