I am running Windows XP Pro.

I spent a long time on this, narrowing down and trouble-shooting what the cause is.

Problem: after installing the HP software for HP dvd200i I discovered that streaming MPEG-1 off web-sites would not play with WMP. WMP would play MPEG-1 if I right-click, download and save-as, but if tried to play as it downloaded (streaming) then it would just sit there "connecting" and take about 95%+ according to Task Manager. I had to kill mplayer in task manager.

Solution: I found no easy solution so far... the only way I know to re-enable the streaming MPEG-1 support is to do a system restore in XP prior to installing (Uninstalling Sonic MyDVD does not fix). Then do an installation of the HP software again, but uncheck MyDVD. You cannot author Video DVD but I found Sonic to be not very great anyways... probably other software is better.

If someone finds out exactly what Sonic MyDVD 3 is doing to WMP, and possible to have Sonic installed please post... maybe it is a codec or something that it overwrites for MPEG-1! I am going to work on this more later.

I should also mention that if you want to use Nero 5.5.8.0 or greater, you have to kill the hpcdtray or it will cause Nero to hang when writing the lead-out. I use msconfig to remove it from startup - it is not needed.