Windows 7 Advanced File Move

So, I've been playing with Windows 7 for a few weeks, and I accidentally stumbled across a nice feature.

When I buy a new CD, my standard procedure is to rip it to my computer, listen to the MP33s once through, and once I've verified that the songs got ripped correctly, copy it to my music library. That way, I know that a song is ripped correctly before I file the CD away, and put the mp3s onto my Zune (or whatever music player I'm using at the time).

I used to use a tool called CDex for ripping and Winamp for listening, but I was running 64-bit OS, and the OS isn't even released yet, so I was unsure about using either of those tools. I decided to try with the tools built into Windows 7, and discovered that Windows Media Player could do everything that I needed it to. I haven't gone back. The ripping has been fast, smooth, and correct. I've never had to go back to re-rip a CD that was ripped with Media Player (which I can't say for CDex).

After ripping a few CDs, I started trusting Media Player more. At one point, I was nearing the end of the CD, (I thought it was the last song on the CD, which meant that all the songs ripped fine). Without really thinking about it too much, I went to the location where the MP3s were ripped to, selected the whole folder, <ctrl>+x, went to the location of my music library which happens to be on another computer, and pasted them. Just as I was pasting them, I realized that the music was still playing, and I realized that an access violation was going to occur because the file was still in use in Media Player. But it didn't. No error occurred. The files moved over just fine, and the music continued playing uninterrupted. At first I chalked it up to the fact that the song was cached my Media Player and that it didn't need the actual file anymore. But it then went on to play the next song in the list (there happened to be a bonus song not on the CD case).

I've had similar experiences happen a few times as I've been ripping CDs, I haven't really been able to narrow down precisely what's happening, but I think that the OS is checking to see if a file is in use, and waiting, or maybe that Media Player doesn't lock the files, but watches where they're going.