Well first of all that error message of 'No disc' doesn't sound right. Did you finalise the disc after recording the MP3s on it..?

However I suspect your main problem will be that the DVD player is deliberately designed not to read MP3s on DVD. Certainly Philips machines from that era has a firmware restriction.

If you try to fool the machine to read it as a CD then that certainly won't work, because the drive assembly will use a different and incompatible laser head.

Furthermore; even if this did all work I doubt that a DVD player would be able to read a dual layer disc in anything other than DVD-Video mode.

I think you need to use a program that will store the audio as a special format to make it compatible with DVD players (maybe DVD Movie Factory but you'll have to check).

Edit: Geno got there first