Garry's Mod (pago) = importe modelos de jogos, crie cenas/filmes. HLSS (Half-Life Sound Selector) = addon para tocar música enquanto joga. Instale e configure:
C:\Program Files\Steam\SteamApps\suaconta\garrysmod\garrysmod\).alias hlss-START "voice_inputfromfile 1; voice_loopback 1; +voicerecord; alias ToggleWAV hlss-STOP"
alias hlss-STOP "voice_inputfromfile 0; voice_loopback 0; -voicerecord; alias ToggleWAV hlss-START"
alias ToggleWAV "hlss-START"
voice_fadeouttime 0