Earning Points. Starwood's Preferred Guest program is fairly straightforward: the more nights you spend at participating hotels, the faster you'll earn a free night.
As seen in the EXECUTING phase, the map will write (using Mapper.Context.write()) its output into a circular in-memory buffer (MapTask.MapOutputBuffer). The size of this buffer is fixed and determined by the configuration parameter mapreduce.task.io.sort.mb (default: 100MB).
Re: Windows7 - Recording Using MS Sound Mapper. The Microsoft Sound Mapper is not a real input/output. All that it does is to set the default input/output for Windows. If you go into the Windows Sounds control panel, then whatever are set as the default input/output device will be the device(s) that are used when you select Sound Mapper.