I am waiting till my Sony BDP-S1 arrives in three weeks, as I am sure the Sammy player was "Pre standard". As to the .m2t file, a post on dvinfo.com encouraged me to use ReMux_TS from here
http://www.yamabe.org/softbody.html
to convert the "transport stream" to regular .mpg. That worked like a charm in PowerProducer. Since it was already .mpg and did not need re-encoding, it went on Blu-Ray at write speed, 48 minutes for a 99 minute project.