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Sasha at DC Radio says:

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Protect your content with AudioVideoweb.com's DRM system

Currently available 'Free' with any Windows Media On-Demand Account

AudioVideoweb.com's Digital Rights Management System (DRM) enables it's customers to encrypt their windows media content easily and at no extra charge. This offers greater flexibility and security enhancements enabling content owners to deliver digital media to a broad base of customers easily. Digital Rights Management (DRM) is an end-to-end system that offers content providers and retailers a flexible platform for the secure distribution of digital media files and consumers the ease of use needed to enjoy digital media experiences.

Features of the Audiovideoweb.com's Digital Right's Management System

Setting Rights:

Rights specify how a consumer can use a Windows Media file and define any other actions that are allowed, such as allowing the consumer to play the Windows Media file on a computer. Rights can also specify conditions for the license, players, and portable devices. For example, you can set an expiration date for a license, after which the license is not valid and the Windows Media file can no longer be used.

A license is deleted when it expires, when all counted operations (such as the number of plays) are used, and when the corresponding packaged files are revoked. For example, if a license allows 10 plays, it is only deleted after the Windows Media file has been played 10 times. If a license has both counted operations and an expiration date, the license is deleted after all the counts have been used or the license expires, whichever comes first.

Rights for Using Windows Media Files on a Computer: By using the following rights, you can determine the use of a Windows Media file on a computer:

  • AllowPlayOnPC. This right allows the consumer to play the Windows Media file on a computer. By default, this right is set.

  • Playcount. This right specifies the number of times the consumer is allowed to play the Windows Media file. By default, this right is not set and unlimited plays are allowed.

  • AllowBurnToCD. This right allows the consumer to copy a Windows Media file to a CD in the Red Book audio format. For example, a consumer can copy music to CDs so that she can listen to music on her car stereo. However, once a Windows Media file is copied to a CD, the Windows Media file is no longer protected. By default, this right is set.

  • BurnToCDCount. This right specifies the number of times the consumer is allowed to copy a Windows Media file to a CD. By default, this right is not set and unlimited copying is allowed.

  • AllowBackupRestore. This right allows the consumer to manage licenses by backing up and restoring them. Consumers can restore licenses to the same computer (such as when a consumer reformats a computer) or to different computers (such as a work computer and a home computer).

    The Microsoft License Management Service manages the restoration operation and enforces business rules that prevent a consumer from abusing content and discourage fraudulent use of licenses. Consumers can store licenses on up to four unique computers, meaning they can restore licenses three times (on three computers other than the one to which the license was issued). If an attempt is made to restore licenses to a fifth computer, a Web page is displayed to the consumer describing the limit.

Note If you allow counted operations in a license, you should not allow this right because restoring the license also restores the original values of the operations. For example, you allow 10 plays. The consumer plays the Windows Media file nine times, then backs up and restores the license. However, the restored license allows an additional 10 plays.

By default, this right is set unless you have specified a play count.

Rights for Licenses: By using the following rights, you can specify when a license for a Windows Media file is valid:

  • BeginDate. This right specifies a date after which the license is valid. Before this date, the Windows Media file cannot be played. By default, this license is valid immediately.

  • ExpirationDate. This right specifies a date after which the license is no longer valid and the Windows Media file can no longer be played. For example, you can set a license to expire on December 31, 2004. By default, this right is not set and the license never expires.

  • ExpirationAfterFirstUse. This right specifies the length of time (in hours) a license is valid after the first time the license is used. For example, you can set a license to expire 24 hours after a consumer begins to play the Windows Media file. By default, this right is not set and the license never expires.

  • ExpirationOnStore. This right specifies the length of time (in hours) a license is valid after the first time the license is stored on the consumer's computer. For example, you can set a license to expire 72 hours after it is stored. By default, this right is not set and the license never expires.

  • DeleteOnClockRollback. This right deletes the license if the consumer's computer clock is set to an earlier time. For example, you can use this right if the license also specifies an expiration date. By default, this right is not set and licenses are not deleted when the clock is rolled back.

  • DisableOnClockRollback. This right disables a license if the consumer's computer clock is rolled back. The license is enabled again when the clock is corrected. By default, this right is not set and licenses are not disabled when the clock is rolled back.

Rights for Transferring Windows Media Files: You can specify whether you want to allow Windows Media files to be transferred to portable devices. When a Windows Media file is transferred, a portable license is also created. By default, portable licenses allow unlimited play and unlimited transfer to SDMI-compliant and non-SDMI-compliant devices. However, you can specify your own rights for portable licenses (for example, to restrict the transfer to non-SDMI compliant devices).

By using the following rights, you can specify how a Windows Media file can be transferred and how the portable license is set:

  • AllowTransferToNonSDMI. This right allows the consumer to transfer the Windows Media file to a non-SDMI-compliant portable device or portable media. By default, this right is set.

  • AllowTransferToSDMI. This right allows the consumer to transfer the Windows Media file to an SDMI-compliant portable device or portable media. By default, this right is set.

    Note When using this right, you must follow the SDMI specification. For more information, see the Secure Digital Music Initiative Web site.

  • TransferCount. This right specifies the number of times a consumer can transfer a Windows Media file to portable devices and portable media. When a Windows Media file is transferred to a portable device or portable media, the license for it is stored in the content header. Some portable devices and portable media also have the ability to store licenses separately from the Windows Media files. If the Windows Media file is transferred to such a device, the TransferCount is decremented only the first time the file is transferred to it (assuming the license storage is not deleted or removed). For those portable devices and portable media that do not store licenses separately, the TransferCount is decremented every time the file is transferred. By default, this right is not set and unlimited transfers are allowed.

  • PMRights. This right specifies the rights you want to give in portable licenses. By default, this right is set to 19, which specifies the rights in the portable license to play the file on a portable device and transfer it. For more information about these rights, see WMRMRights.PMRights.

    Note - Although you can set rights in the portable license to allow files to be transferred to SDMI-compliant and non-SDMI-compliant portable devices, the rights you set in the main license (AllowTransferToNonSDMI and AllowTransferToSDMI) replace these settings in the portable license.

  • PMExpirationDate. This right specifies a date when a portable license expires. Once a portable license has expired, the file cannot be transferred from a computer or portable device. If a portable license expires on a portable device, the file can no longer be played. By default, this right is not set and the portable license never expires.

Rights for Security Levels: You can specify the security levels you want to require for your packaged files on players and portable devices, which include portable players and portable media. You can also specify the security level for the Windows Media Format SDK on which player applications are based.

Application security levels
The application security level is a value that ranks the security of a player application or portable device, for example a player on a computer. Different players and portable devices have different levels of security. For example, a player or portable device with a high security level can play SDMI-compliant content; whereas, a less secure player or portable device cannot.

You can specify the minimum application security level that you want to require for playing your Windows Media files. When a consumer tries to play the Windows Media file, the minimum application security level specified in the license is compared to the application security level of the player or portable device. The result determines whether the Windows Media file can be played. When specifying a minimum security level for your Windows Media files, consider whether you want your Windows Media files to be available to a wide market (require a low security level) or whether you want to restrict playback of your Windows Media files to very secure players and portable devices (require a higher security level).

The following table shows examples of application security levels for different players and portable devices.

Security level Players and portable devices Example
150 Players and portable devices that produce clear content. Microsoft Windows Media Player for Pocket PC
450 The first level of security intended to meet the needs of the SDMI specification; portable media must have a hardware serial number. SDMI-compliant players and portable devices
1,000
  • Audio players.
  • Desktop computers with software obfuscation (software code with hidden information).
  • Portable devices.
Windows Media Player 6.4, Windows Media Player 7
2,000 Applications based on Windows Media Format 7.1 SDK or later, and follow a stricter set of content protection guidelines than applications at level 1000. Windows Media Player 7.1 and later

Client SDK security level: All player applications that support packaged files have a component that is based on the Windows Media Format SDK. If you want your files to have greater security, you can require a minimum level of security for the Windows Media Format SDK on which a player application is based. Significant enhancements have been made starting with the Windows Media Format 7.1 SDK, including signature verification for codecs and the SDK component. For players based on the Windows Media Format 7.1 SDK or later, set the client SDK security to 3000. This value is not set by default.

By using the following rights, you can specify the minimum security levels for players and portable devices:

  • MinimumAppSecurity. This right specifies the minimum security level that is required of a player application. By default, this right is set to 150.

  • PMAppSecurity. This right specifies the minimum security level that is required of a portable device. By default, this right is set to the same value as the MinimumAppSecurity right. If MinimumAppSecurity is not specified, the default value is 150.

  • MinimumClientSDKSecurity. This right specifies the minimum security level that is required of the Windows Media Format SDK on which a player application is based. By default, this right is not set.

    You can determine whether a player application is based on Windows Media Format 7.1 SDK or later by using a license request. Use the WMRMChallenge.CheckClientCapability property with the value MinimumClientSDKSecurity.

Rights Scenarios: This topic describes common scenarios and the rights to issue for each.

Basic playback. For basic playback functionality, allow the following rights:

  • AllowPlayOnPC
  • AllowBackupRestore

Portable players and portable media. To let consumers play their Windows Media files on portable devices, use the following rights:

  • AllowTransferToNonSDMI
  • AllowTransferToSDMI
  • PMRights
  • TransferCount (if you want to limit the number of transfers)
  • PMAppSecurity
  • PMExpirationDate

Promotional material. To distribute promotional material for limited use, use the following rights:

  • AllowPlayOnPC
  • BeginDate and ExpirationDate (to limit the time during which the license is valid)
  • DeleteOnClockRollback or DisableOnClockRollback
  • MinimumAppSecurity (set to a low value so that more consumers can play the Windows Media file)

Rental. To let consumers play a Windows Media file for a period of time dependent on when they first open the file, use the following rights:

  • AllowPlayOnPC
  • ExpirationAfterFirstUse or ExpirationOnStore
  • DeleteOnClockRollback or DisableOnClockRollback

*Digital Rights Management is a standard feature that is available with all Windows Media Accounts at no extra charge. To place an order please Click Here

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