Free Easy MP3 Sound Recorder
Full user review
Featuring a very nice looking and simple interface, It can be used to record a sound file from your microphone, Internet streaming audio or any music played by your sound card. You are able to set the desired quality, depending on your sound card capabilities.
I've recorded a MP3 file of over two hours and didn't find any problems. The software just ran in the background beautifully.
Using DirectX 9 runtime and Window Media Format runtime this program does a nice job recording whatever you want with very low processor occupancy.