In Logic Pro, choose File > Bounce, then choose Project or Section.
Set your bounce options:
Select the PCM checkbox, and make sure the PCM destination is selected.
Choose AIFF or Wave from the File Format pop-up menu.
Choose 16-bit from the Resolution pop-up.
Choose 48000 from the Sample Rate pop-up.
Choose Interleaved from the File Type pop-up.
Choose any other options like Start and End points and Mode.
Choose a location for the audio file, then click Bounce.
In a browser, sign in to your SoundCloud account, click Upload on the SoundCloud website, then upload your audio file.
Upload your GarageBand song to SoundCloud on a Mac
In GarageBand on your Mac, choose Share > Export Song to Disc.
Set your export options:
Choose AIFF or WAVE.
Choose Uncompressed 16-bit from the Quality pop-up.
To export only the part of the song covered by the cycle region, or only the part of the project defined by selected regions, select the “Export cycle area, or length of selected regions (if Cycle is turned off)” checkbox.
Choose a location for the audio file, then click Export.
Sign in to your SoundCloud account in a browser, click Upload on the SoundCloud website, then upload your audio file.
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