PLaying MP3s on Sony DVD player

[boeingbus2002]

I have an "old" SOny DAV300 DVD player, however it wont allow me to play MP3's or CD-R/CD-RW. Anyone know if there is a way to change this? Many new systems already allow this.
(Also was thinking if i later copied some home movies onto DVD would it work?)
Cheers

[spannersatcx]

Try DVDRHELP (http://www.dvdrhelp.com) they show a Sony DAV-S300, it won't play mp3's but should play DVD+-R's