AstLinux 0.7.1 and later, no longer are sound files included in the default image. This provides several benefits:

1. The download image has been reduced (~25% smaller) to approximately 30MB.
2. Users can choose to install more than just the core sounds, or non-english sounds.
3. For some users, better quality sound playback will be achieved.

Using the web interface, click on the System tab and view the Asterisk Sounds Packages section:

Select the package values (ex. core-english-ulaw), then select the action (ex. Upgrade/Install), then click on the Sounds Package button to perform the action. Usually a 'core' and 'moh' sound package using your native codec is all that is necessary, or at least a good start.
Note: The default “Sounds Pkg URL” currently supports English, Spanish and French.

Alternately, the CLI can be used to manage sounds packages:

To add the Core-English-ulaw Sound Package:
$ upgrade-asterisk-sounds upgrade core en ulaw

To add the Music-on-Hold ulaw Sound Package:
$ upgrade-asterisk-sounds upgrade moh en ulaw

To remove the Extras-French-alaw Sound Package:
$ upgrade-asterisk-sounds remove extra fr alaw

The available options for the upgrade-asterisk-sounds command are as follows:

Usage: upgrade-asterisk-sounds upgrade|remove|remove-all|show
core|extra|moh
en|es|fr
ulaw|alaw|gsm|wav|g729|g722
[sounds_repository_url]

Note: The remove-all option will remove all files in the /var/lib/asterisk/sounds/ and /var/lib/asterisk/moh/ directories! Most users will want to use the remove option instead.