Audio

Audio is an asset category in the library. Audio assets can be used within a place through objects.

User-uploaded audio
Uploading audio was only limited to administrators.

On September 25th, 2013, players could upload MP3 files to be published (after moderation). Before player-uploaded audio was permitted, sounds were only able to be uploaded to the catalog by administrators; most of which was provided by Roblox or RobloSam. When it was originally implemented, the system only allowed 15 seconds of audio and cost a player 250 Robux per audio asset, allegedly set up to prevent misuse of the feature. However, a loophole was discovered shortly afterwards, in which players could technically upload a full song by speeding it up to the point where the song's duration became 15 seconds, and creators could tweak the pitch to be lowered at a specific value (which was usually predetermined by the uploader in the description), for the full song to play normally.

Changed limits
On January 15th, 2014, Roblox increased the sound limit to 120 seconds, 8 times the length of the previous limit, and the cost decreased by 60% to 100 Robux, allowing longer audio to be uploaded for a lower price. The update proved to be successful, as it reduced the hassle of uploading multiple short samples of a long audio and also reduced the complications that came with the pricing.

On September 26th, 2016, the sound limit was increased to 6 minutes, while the cost would be changed to a dynamic pricing system.  On October 6th, 2016, the dynamic pricing system and the 6-minute audio limit would be temporarily retired while some issues would be fixed. About a week later, 6-minute audio returned. It is unknown why it was temporarily retired.

As of December 1st, 2016, the audio limit has been increased to 7 minutes.

APM Music
In late May 2018, Roblox signed a license agreement with APM Music, a music company that produces music tracks for usage in films, TV shows, video games, and commercials, and thus, uploaded thousands of APM Music tracks onto the website, allowing developers to use free music without risk of copyright infringement.

Sound ID
Each Audio, like other objects, has a unique ID found in the URL of their audio page. Unlike other objects, audio IDs do not need to be subtracted and are given directly. Audio IDs are used when creating Sound objects.

More information can be found in this tutorial.

Copyrighted Audio Removal
​​On June 18, ROBLOX will begin an automated process to remove all copyrighted audio from the site. This means you can only use your own audio, ROBLOX's licensed audio, or non-copyrighted audio. Otherwise, Most popular music on ROBLOX is copyrighted music. Necessarily, you won't get moderated, but somethings will change. For example, if you upload the audio or play it in games, some changes will be made, there will either be no music or the licensed music. What is the licensed music anyway? The mentioned deal with APM Music allowed ROBLOX to download all of APM's music, copyright-free, and acquire a license to the songs. Lots of songs, however, don't see the same fate. What this means, basically, is that since most popular music, like Despacito 1, Bad Blood, the Jaws Theme, or 6ix9ine, have copyrights, expect these and others to be removed. Roblox is doing this to avoid lawsuits. Just like the Pokemon Brick Bronze removal, if a music company found out their song was being used by a site or user without permission, it would probably lead to lawsuit if it wasn't taken down. ROBLOX has had too many legal issues before, so they would of course avoid this. There is both criticism, such as most copyrighted music is popular, and praise, since lots of music is copied from other users, not to mention glitches can make it inappropriate. More controversy comes from the well known fact that, just like Robux, will be ways to reupload deleted copyright music and sounds to ROBLOX again that could get moderator action just like Robux scams.

Trivia

 * There is a bug where some audio files stop playing after a couple seconds. This bug only occurs on the website.
 * There is another bug where an audio file won't play at all (Mostly on .ogg sound files).


 * Some users have gotten banned by the moderation system for uploading audio that was considered too loud. Loud audios can apparently result in moderation (depending on how loud)
 * Sometime in 2014, an unknown user found a bug where you could upload audios via making a plugin, which started to make a lot of bypassed audios. This eventually was fixed but not for long, as of mid 2016 people have been making audios but this time instead of plugins, they used RenderMeshes to bypass the moderation system, this ultimately created a lot of bypassing loop-holes for at least 10 months until on April 26th, 2017, all audios that were RenderMeshes simply did not work in the instance and what was followed by tougher moderation regarding the assets.
 * Shortly after April's incident, people have started to find out more ways to bypass audios so that inappropriate content can be allowed on Roblox, although people have been slowing/speeding up audios so that they can change the pitch in-game so it creates an inappropriate sound, people needed a more reliable source, so in May of 2017, people started uploading normal audios with a selection of audio which was silent (silence ranges from 20 seconds to a couple of minutes) then inappropriate material/sound/music would play to trick the Moderators into approving the audio, people have still been uploading raw audios of inappropriate content and again it has worked. It is unknown whether or not this has been patched, however, nowadays it's rarer for one of these audios to go through making "Bypassed Audios" pre-officially dead.