In fix-one-thing-break-another style, the latest update (http://hldj.org/forums/viewtopic.php?f=4&t=1079) to the Source engine introduces the new higher-quality SILK voice codec (as used in Steam voice) but also disrupts the default functionality of HLDJ on most servers. The new codec is enabled by default via the sv_use_steam_voice console variable and has the unsavoury side-affect of disabling the use of voice_inputfromfile which is needed by HLDJ to play audio. Unlike a past update which introduced the sv_allow_voice_from_file cvar for some Source games and was opt-in (no effect on default functionality), the new sv_use_steam_voice cvar applies to most Source games and is opt-out, meaning server operators must explicitly disable it in order to have their servers return to normal. If you're a server operator and would like to continue using HLDJ on your server, disable the new codec by setting sv_use_steam_voice 0. If you play on a server where HLDJ is an integral part of the fun, remind your server operator to do the same!