I installed SP1 and noticed a different behavior when previewing my project. I'm not sure if this is designed this way or a small bug. If I start the preview using the space bar, I cannot stop it with the play button in the preview window (I must use the space bar again) because the play button does not change to a pause button. If I start the playback using the play button, I can stop it with either the Pause button which appears or the space bar.
This is not a big deal, but I thought it was worth mentioning.
MSP8 SP1 Different Behavior
You're ½ right, ½ wrong 
If you start with the space bar, you can find the pause icon where the play-to-end icon was, so space bar = play to end, which is the correct behaviour (see p. 411 of the manual). If you wish to play from start, from the keyboard, pressing the space bar will work only if the playhead is at the start or the end of the project. You can, of course, press Home to place it at the start.
If you start with the space bar, you can find the pause icon where the play-to-end icon was, so space bar = play to end, which is the correct behaviour (see p. 411 of the manual). If you wish to play from start, from the keyboard, pressing the space bar will work only if the playhead is at the start or the end of the project. You can, of course, press Home to place it at the start.
[b][i][color=red]Devil[/color][/i][/b]
[size=84]P4 Core 2 Duo 2.6 GHz/Elite NVidia NF650iSLIT-A/2 Gb dual channel FSB 1333 MHz/Gainward NVidia 7300/2 x 80 Gb, 1 x 300 Gb, 1 x 200 Gb/DVCAM DRV-1000P drive/ Pan NV-DX1&-DX100/MSP8/WS2/PI11/C3D etc.[/size]
[size=84]P4 Core 2 Duo 2.6 GHz/Elite NVidia NF650iSLIT-A/2 Gb dual channel FSB 1333 MHz/Gainward NVidia 7300/2 x 80 Gb, 1 x 300 Gb, 1 x 200 Gb/DVCAM DRV-1000P drive/ Pan NV-DX1&-DX100/MSP8/WS2/PI11/C3D etc.[/size]