## MSACM 1.0: Compressed Audio Will Not Play

Q100546

The information in this article applies to:

- Microsoft Encarta 1994 The Complete Multimedia Encyclopedia
- Microsoft SoundBits, Hanna-Barbera, version 2.0
- Microsoft SoundBits, MGM Movies, version 1.0
- Microsoft SoundBits, Musical Instruments, version 1.0
- Microsoft Musical Instruments for Windows, version 1.0
- Microsoft Cinemania for Windows, 1992, 1993, 1994, 1995, 1996, 1997 editions, version 1994
- Microsoft Art Gallery for Windows, version 1.0
- Microsoft Multimedia Mozart for Windows, version 1.0
- Microsoft Multimedia Stravinsky for Windows, version 1.0
- Microsoft Bookshelf for Windows, 1991, 1992, 1993, 1994, 1995 editions, version 1993
- Microsoft Dinosaurs for Windows, version 1.0
- Microsoft Windows Sound System, versions 1.0 and 1.0a
- the operating system: Microsoft Windows versions 3.0, 3.0a, 3.1, 3.11

## SUMMARY

Compressed audio will 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 only to the products listed at the top of this article, which use MSACM version 1.0. For information about MSACM version 2.0, please see the following article in the Microsoft Knowledge Base:

> Q121132 MSACM 2.0: 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.
Use the following steps to verify that MSACM is installed correctly:

1. Check the Drivers option in Control Panel for the following installed driver:

             Microsoft Sound Mapper V2.00

   If you see "Microsoft Sound Mapper V2.00" listed as an installed driver, your system has MSACM 2.0. Please refer to the MSACM 2.0 article listed above, or remove "Microsoft Sound Mapper V2.00" before proceeding to the next step.
2. From MS-DOS, copy Msacm.drv and Msadpcm.acm from the Microsoft multimedia program's disk to the Windows System folder. For more information about how to perform this task in Windows, see your Windows printed documentation or online Help.
   If prompted, replace any currently installed versions of those files. This will also verify that only compatible versions of Msacm.drv and Msadpcm.acm are installed.
   NOTE: In Sound Bits, if the Msacm.drv or Msadpcm.acm file is corrupt, you must rename or delete it from the Windows System folder, then reinstall Sound Bits by running the Setup program. It is not possible to manually copy these files from the disks.
3. Use a text editor, such as Microsoft Notepad, to make the following changes to the System.ini file, which is located in the Windows folder.

             [Drivers]
             WaveMapper=MSACM.DRV

             [MSACM]
             Install=MSADPCM.ACM

   NOTE: Check your Windows folders and Windows System folders to ensure that there are not multiple copies of Msadpcm.acm or Msacm.drv.

## MORE INFORMATION

If MSACM is not installed properly, simply re-installing a program that uses it will not fix the problem. If the Setup program for the Microsoft application finds MSACM files present on the system, it determines that MSACM has already been installed, and will not re-install MSACM.

Additional query words: multi media multimedia multi-media MSACM MSADPCM sound kbmm mmtitles

Keywords :
Issue type :
Technology : kbOSWinSearch kbHomeProdSearch kbHomeMMsearch kbZNotKeyword6 kbEncartaSearch kbBookshelfSearch kbSoundBitsSearch kbEncartaEncycSearch kbCineManiaSearch kbMMStravinsky kbMMMozart100 kbDinosaurs100 kbMusicalInst kbSoundBits kbArtGallery kbEncartaEnCyc1994 kbOSWin310 kbOSWin311 kbOSWin300 kbOSWin300a

Last Reviewed: June 13, 2001 © 2001 Microsoft Corporation. All rights reserved. Terms of Use.