mp3 prueba1 en fedoa run1: Processor: Intel Core i7-3612QM @ 2.02GHz (1 Core), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 2048MB, Disk: 11GB VBOX HDD, Graphics: LLVMpipe, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM Gigabit OS: Fedora 18 (Spherical Cow), Kernel: 3.6.10-4.fc18.i686 (i686), Desktop: LXDE 0.5.10, Display Server: X Server 1.13.0, Display Driver: modesetting 0.4.0, OpenGL: 2.1 Mesa 9.0.1 Gallium 0.4, Compiler: GCC 4.7.2 20121109, File-System: ext4, Screen Resolution: 1024x768, System Layer: VirtualBox prueba2: Processor: Intel Core i7-3612QM @ 2.02GHz (1 Core), Motherboard: Oracle VirtualBox v1.2, Chipset: Intel 440FX- 82441FX PMC, Memory: 2048MB, Disk: 11GB VBOX HDD, Graphics: LLVMpipe, Audio: Intel 82801AA AC 97 Audio, Network: Intel 82540EM Gigabit OS: Fedora 18 (Spherical Cow), Kernel: 3.6.10-4.fc18.i686 (i686), Desktop: LXDE 0.5.10, Display Server: X Server 1.13.0, Display Driver: modesetting 0.4.0, OpenGL: 2.1 Mesa 9.0.1 Gallium 0.4, Compiler: GCC 4.7.2 20121109, File-System: ext4, Screen Resolution: 1024x768, System Layer: VirtualBox LAME MP3 Encoding 3.99.3 WAV To MP3 Seconds < Lower Is Better run1 .... 32.65 |=========================================================== prueba2 . 34.03 |==============================================================