Starting with git May 5 and May 8, my early media which is made up of 2 custom wav files followed by rings (see below), plays silence in place of the wav files most of the time. The caller hears the wav files about 1 out of 10 calls, then rings. When I return to git May 1 or earlier early media wav files play 100 percent of the time as since 2010. I ran traces for working and failing gits and they are identical. That is, FS set the early media as usual. I will be glad to provide additional info but need instructions since the working/non working are identical. I did update 5/8 with ./bootstrap.sh and ./configure --with-openssl before the make current. Note no changes have been made to the config file, only git updates.

The xxsounds variable contains the path/filename:
<action application="set" data="ringback=file_string://${xxsounds}hi-long.wav!${sayname}!tone_stream://${us-ring};loops=-1"/>
        <action application="set" data="hangup_after_bridge=true"/>
        <action application="set" data="continue_on_fail=true"/>
        <action application="bridge" data="{originate_timeout=17}${group_call(everyone@${domain_name}+A)}"/>

Test traces are identical:
2012-05-08 15:59:10.846038 [DEBUG] switch_ivr_originate.c:1235 Play Ringback File [file_string:///usr/local/freeswitch/conf/xxsounds/hi-long.wav!/usr/local/freeswitch/conf/xxsounds/mario.wav!tone_stream://%(2000,4000,440,480);loops=-1]
2012-05-08 15:59:10.846038 [DEBUG] switch_core_file.c:180 File /usr/local/freeswitch/conf/xxsounds/hi-long.wav sample rate 16000 doesn't match requested rate 8000
2012-05-08 15:59:10.846038 [DEBUG] sofia.c:5677 Channel sofia/internal/sip:111@12.228.1.26:54035 entering state [proceeding][180]
2012-05-08 15:59:10.846038 [DEBUG] switch_core_session.c:919 Send signal sofia//xxxxxcc/19161112222@12.123.123.35 [BREAK]
2012-05-08 15:59:10.846038 [NOTICE] sofia.c:5769 Ring-Ready sofia/internal/sip:111@12.228.1.26:54035!
2012-05-08 15:59:10.846038 [DEBUG] sofia.c:5670 Channel sofia/xxxxxcc/19161112222@12.123.123.35 skipping state [early][183]
2012-05-08 15:59:11.445209 [DEBUG] switch_rtp.c:3253 Correct ip/port confirmed.
2012-05-08 15:59:12.285314 [DEBUG] switch_core_file.c:180 File /usr/local/freeswitch/conf/xxsounds/mario.wav sample rate 16000 doesn't match requested rate 8000