Transport Toolbar
Play
If an area of track is selected, only that selection will be played. Otherwise, playback begins wherever the selection cursor is. To start playback from the beginning, choose Skip to Start.
Loop
File:Loop.png Hold down Shift while pressing Play to loop the current selection or the whole track, playing it over and over again until you press Stop.
Record 
Recording begins at either the current cursor location or at the beginning of the current selection. Pressing Record always creates a new track, but holding down Shift while pressing Record starts the recording at the end of the currently selected track(s).
Stop
Stops playing or recording immediately.
Pause
Temporarily pauses playing or recording without losing your place. Press Pause a second time to resume.
Skip to Start
Move the cursor to the beginning of the audio. This is useful if you want to play everything, or record a new track starting from the beginning.
Skip to End
Move the cursor to the end of the audio.
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Rewind File:Transport rewind.png Cursor to Start Places the cursor at the start of the project. SHIFT + click creates a selection area from the cursor to the start, or from the right edge of a selection area to the start.
Play
File:Transport play.png Play Button
Press the play button to listen to the audio in your project. You can also hit the spacebar to start or stop playback. Playback begins at the current cursor position. If a region of audio is selected, only the selected region will play. To quickly play the entire project, execute Select All before playing. If there are multiple tracks going to the same channel in your project, they will be mixed automatically for playback.
Record
File:Transport record.png Record Button
Press the record button to record a new track from your computer's sound input device. Use the Preferences to configure the recording options. In particular, there is an option to record stereo or mono, and there is an option to play the other tracks while recording.
Recording always happens at the project's sample rate.
Pause
File:Transport pause.png Pause Button
Will pause during playback, or during recording. Press again to unpause.
Stop
File:Transport stop.png Stop Button
Press the stop button or hit the spacebar to stop playback immediately.
Fast Forward File:Transport ff.png Cursor to End Places the cursor at the end of the project. SHIFT + click creates a selection area from the cursor to the end, or from the left edge of a selection area to the end.
