Boss BR-1200CD Owner's Manual page 88

Mixing audio from various tracks onto a stereo track (Bounce)
Several seconds may be necessary before you can
proceed with the next operation.
8. To check the results of the bouncing, play the disc back
as an audio CD (p. 224).
9. To enable playback of the bounced tracks on a
conventional audio CD player, finalize the disc (p. 225).
Finalizing the CD-R/RW disc allows the content to
be heard using a regular CD player but prevents any
further bouncing or writing of tracks to the disc. Do
not finalize the disc if you want to bounce or write
other tracks to it.
If using the BR-1200CD to play the disc, write to the
disc in Track-At-Once format (p. 219).
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