PlayStation 2 Early versions of the PlayStation 2 have a buffer overflow bug in the part of the BIOS that handles PS1 game compatibility; hackers found a way to turn this into a loophole called the PS2 Independence Exploit, allowing the use of homebrew software. Other options for homebrew development would be the use of a modchip or the utilization of a PS2 hard drive and an HD Loader. In Europe and Australia, the PS2 came with a free Yabasic interpreter on the bundled demo disc for some time. This allows simple programs to be created for the PS2 by the end-user. This was included in a failed attempt to circumvent a UK tax by defining the console as a "computer" if it contained certain software. A port of the NetBSD project and BlackRhino GNU/Linux, an alternative Debian-based distribution, are also available for the PS2. Using homebrew programs (e.g. 'SMS Media Player') it is possible to listen to various audio file formats (MP3, OMA, Ogg Vorbis, AAC, FLAC, AC3), and watch various video formats (DivX/XviD, MPEG1, MPEG2, MPEG4-ASP in AVI Container) using the console. Media can be played from any device connected to the console i.e. external USB/FireWire/thumb drive/hard disk drive (FAT32 only), the internal hard disk on early revision consoles, optical CD-R(W)/DVD±R(W) disks (modded systems or patched disks), or network shares (Windows Network or PS2 host: protocol). A more recent development (May 2008) called Free McBoot or FMCB allows homebrew programs to be launched without a trigger disc required by the older exploit. This also allows the use of homebrew on unmodded systems without a functional disc drive. However, installation of the exploit to each individual memory card requires either an already exploited/modded system in order to launch the installer, or a boot image that can load an app that loads ELF files (a Network Adaptor with a hard drive is also required). Simply copying from one memory card to another will not work. This exploit does not work on the latest slimline PS2s (the later SCPH-9000x models with BIOS 2.30) but will work on all models prior to that. The newest versions of Free McBoot (version 1.90 and newer) also have the ability to install and boot from both Sony and non-Sony HDDs when using an original "fat" model PS2 and network adapter. This support is called Free HDBoot or FHDB. With a few minor issues, it is