## MSACM 2.0: Compressed Audio Will Not Play

Q121132

WINDOWS kbusage kberrmsg kbmm kbfaq

The information in this article applies to:

- Microsoft Ancient Lands for Windows, version 1.0
- Microsoft Bookshelf for Windows for Windows, 1994 and 1995 editions
- Microsoft Bookshelf 1996-97 for Windows
- Microsoft Cinemania for Windows, 1995 and 1996 editions
- Microsoft Complete Baseball for Windows, version 1.0
- Microsoft Dangerous Creatures for Windows, version 1.0
- Microsoft Dogs for Windows, version 1.0
- Microsoft Encarta 96 Encyclopedia for Windows
- Microsoft Encarta for Windows, 1995 edition
- Microsoft Encarta 96 World Atlas for Windows
- Microsoft Multimedia Schubert for Windows, version 1.0
- Microsoft Multimedia Strauss for Windows, version 1.0
- Microsoft Music Central for Windows, 1996 edition
- Microsoft Oceans for Windows, version 1.0
- Microsoft Windows Sound System for Windows, version 2.0
- Microsoft Wine Guide for Windows, versions 1.0, 1.0a, 2.0
- Microsoft World of Flight for Windows, version 1.0
- Microsoft Windows operating system version 3.x

## SYMPTOMS

Compressed audio does not play, or you may receive one of the following error messages:

> No wave device that can play files in the current format is installed. Use the Drivers option to install the wave device.
> Multimedia device Sound failed.

NOTE: This article does not apply to Microsoft Windows 95. If you are using Windows 95, please see the following article in the Microsoft Knowledge Base:

> Q133365 Windows 95: Troubleshooting Problems with Compressed Audio

NOTE: This article applies to those applications that use MSACM version 2.0 only. For information about applications that use MSACM version 1.0, please see the following article in the Microsoft Knowledge Base:

> Q100546 MSACM 1.0: Compressed Audio Will Not Play

## RESOLUTION

These symptoms can occur if the Microsoft Audio Compression Manager (MSACM) is not correctly installed. MSACM is used for playing compressed Sound (.wav) files .
To verify that MSACM is installed correctly, do the following:
NOTE: The following steps involve searching for, copying, and modifying files and folders. For more information about how to accomplish these tasks, see your Windows printed documentation or online help.

1. From MS-DOS, copy the following files from the appropriate folder on the compact disc to the Windows System folder on the hard drive:

   > Acmcmprs.dll
   > Imaadpcm.acm (used only by some programs)
   > Msgsm610.acm (used only by some programs)
   > Msacm.dll
   > Msacm.drv
   > Msadpcm.acm

   If you are prompted, replace any currently installed versions of those files. This also verifies that only compatible versions of MSACM files are installed.
   NOTE: Check your Windows folder and Windows System folder to ensure that there are not multiple copies of the MSACM files.
   NOTE: In Encarta 1995, it is not possible to manually copy these files from the compact disc. If the MSACM files are corrupt, you must rename or delete them from your hard drive, then remove Encarta 1995 by running the Setup program. After removing, run Setup again to reinstall Encarta. Setup then installs the MSACM files.
2. Use a text editor, such as Microsoft Notepad, to create or modify the following lines in the System.ini file, which is located in the Windows folder:

       [Drivers]
       WaveMapper=MSACM.DRV
       MSACM.msadpcm=MSADPCM.ACM
       MSACM.imaadpcm=IMAADPCM.ACM
       MSACM.msgsm610=MSGSM610.ACM

   NOTE: Only certain drivers are needed to play certain types of compressed audio.
3. Verify that the Msacm.ini file has the correct settings. This file is located in the Windows folder. Below is an example of the Msacm.ini:

       [Priority]
       Priority1=1, MS-PCM, Microsoft PCM Converter
       Priority2=1, MS-ADPCM, Microsoft ADPCM CODEC
       Priority3=1, Microsoft IMA ADPCM, Microsoft IMA ADPCM Codec
       Priority4=1, Microsoft GSM 6.10, Microsoft GSM 6.10 Audio CODEC

   A driver with a priority set to 0 won't play sound or causes the "No wave device that can play files in the current format...." error message to be displayed. To correct the problem, set each line to = 1.

### Pronunciations and Foreign Language Sounds

Some programs use the GSM 6.10 CODEC driver for playing pronunciations or foreign language samples. If normal sounds play correctly, but pronunciations fail, follow the steps above to verify correct installation of MSACM. If the steps above do not correct the problem, please see the following article in the Microsoft Knowledge Base:

> Q112554 No Pronunciations or Foreign Language Sounds

## MORE INFORMATION

If MSACM is not installed properly, simply reinstalling a program that uses it does not fix the problem. If the Setup application for the Microsoft program finds MSACM files present on the system, it determines that MSACM is already installed, and does not reinstall MSACM.

Additional query words: ensonic multi-media mmtitles

Keywords :
Issue type : kbprb
Technology : kbHomeProdSearch kbHomeMMsearch kbEncartaSearch kbKidsSearch kbBookshelfSearch kbEncartaEncycSearch kbAncientLands kbMMStrauss kbMMSchubert kbBookShelf1996 kbBookShelf1997 kbDangerousCreatures kbDogs100 kbWine100 kbWine100a kbWine200 kbWorldofFlight kbEncartaEnCyc1996 kbEncartaWorldAtlas1996

Last Reviewed: May 5, 1999 © 2001 Microsoft Corporation. All rights reserved. Terms of Use.