Songs disappear in 'View Songs' Mode
Every now and then, the songs in my playlist disappear - maybe some strange combination of keys I pressed by mistake? I can change the View mode to 'Playlist' and there the songs are again. And I can flip this back and forth: they disappear in Songs view, re-appear in Playlist view
Also, at one point I pressed 'close window' absentmindedly or by mistake. It closed, but I can find no way to get it back. Opening the possible options by clicking iTunes on the task bar show lots of options but none to re-open the window.
I can fix all this be re-booting the PC, but I never know when it's going to rise up and bite me again.
Finally, my iTunes is pinned to the task bar. And I can't find the iTunes app itself anywhere on my hard drive. What will happen if I un-pin it?
Thanks for your help.
P.S. I clicked "laptop" but it's not about my Dell laptop but about an HP laptop that I don't own but must maintain for a dancing group that I'm president of. Also, I see iTunes for Mac in the choices below... this is actually about iTunes for PC.
Windows, Windows 6