I figured this out. I'm not sure who to talk to about the fix. Essentially PS3 has a 2GB audio pcm/stream/file size limit. In DLNAResource.java when its a stream the size is set to DLNAMediaInfo.TRANS_SIZE which is 100000000000L. Divide that by 2^32 (or 4294967296) and you get 1215752192 which is a number less than 2^31 (or 2147483648). That number works out to be 1 hour 45 minutes and 32 seconds of streaming time.
It only worked at all because when 100000000000L is assigned to a signed integer type on the PS3 it ends up being a positive number (or less then 2Gb). So, the limit is 2Gbs. Once you set that size to 2147483647 you get the maximum amount of streaming time of 3 hours 6 minutes and 24 seconds.
To get around the 3 hour limit I think you can just set that stream to repeat in the mini control window on the ps3. You can repeat 1 or infinite times. I haven't tried this yet, but I think that would work.