Don't know if this should go here but well, anyway.. I just downloaded this build to play the new campaign shiv released yesterday
linkyRight from the start I noticed something was wrong with the sound effects, particularly with the message sounds.. it seems that somehow when you replay the mission (I mean you play a couple of sec's and then you hit the escape key and select to replay mission) the game starts using another sound from the one that it's actually supposed to use, instead of using the empty message sound it was using the "I'm going down!" message from the wingmen everytime a message came in.
This happened with most of the missions of the campaign, and I wasn't sure if it was the build or my FS install, so I tested with the recommended build for the campaign
clicky one the same mission and all went smoothly.
I got curious and switched back to retail, created a new pilot and tested with 5437 the retail campaign and the same thing happened, I started the training mission and then I just hited esc and selected to replay and after that no more dialogue, this until I closed FS and opened it again, then I worked just fine.
EDIT: this are my specs..
C:\Games\FreeSpace2\FS2_OPEN.exe -mod mediavps -spec -glow -env -mipmap -nomotiondebris -noscalevid -missile_lighting -normal -3dshockwave -cache_bitmaps -dualscanlines -targetinfo -orbradar -rearm_timer -ballistic_gauge -ship_choice_3d -weapon_choice_3d -3dwarp -warp_flash -snd_preload -ambient_factor 50 -spec_exp 11 -spec_point .6 -spec_static 1 -spec_tube .5 -ogl_spec 82 -fov .88