Eng:What sound formats can I import into Scratch?

Scratch can import uncompressed Windows WAV files, some MP3s, AIFF files, and AU files (but not with a 24 bits per sample rate format). If you have a sound in another format you want to use, you can also convert it so Scratch can import it. Some Scratchers have also made MIDI audio formats.

Converting sound files
You can use an external audio editor (such as Audacity, which is open source and safe to use) to convert many sound file formats to the correct formats. One can also use iTunes to convert a sound to .mp3 format.