Auto detect file extension .sln, .sln12 to .sln192 as correct PMC

Hi, SLN files are used by Asterisk Open Source software and so more. VLC seems to auto play fine .sln file as PCM 16bit 8kHz file but not its more recent variants : 8kHz : .sln 12kHz : .sln12 16kHz : .sln16 24kHz : .sln24 32kHz : .sln32 44.1kHz : .sln44 48kHz : .sln48 96kHz : .sln96 192kHz : .sln192 Please consider to auto play these new file extensions as PCM 16 files with corresponding frequencies. Thank you much. https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Codecs+and+Audio+Formats

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