In Windows, is there a simple way (i.e. something you could type on a single command line) to just play a couple of .mp3 files and then exit on its own?
wmplayer, f
You can probably write a small VBScript which will use the Windows Media Player ActiveX control to play an audio file. You should be able to terminate the process from that too, once playing finished.
I'm looking around a bit and maybe can come up with a working solution. Might take a while, though.