hello

I recently bought malata dav 3600 and was expecting that it will play dvd-rw discs ( i tried pioneer and sony-none is working) and dvd-r discs with mp3 songs and dvd-r/rw with burnt mpg, mpeg 1 and 2 files but SHIT.
None of these discs are working...norcent dp300 plays them all and koss 2164 either but this high end machine dav 3600 NOT playing these discs so I was wondering if you guys can tell me if malata dvp 520 has the same problem or not.....can malata dvp 520 play these discs below?

dvd-r/rw (mp3 files)
dvd-r/rw (mpg,mpeg1,mpeg2 files without reencoding to vcd or svcd)

norcent dp300 for $50 from walmart plays them ok and koss 2164 either!!!

Please users of malata dvp 520 give me a hand...

thank you in advance