mp3 playing with mplayer without soundcard

[zolbeso at gmail.com (zonyi besk)]

Hi All,

I need to use  mplayer replaying in realtime mixed mp3 files without
soundcard.
The output would piped to an input of a stream.
The inputs would be 2 mp3 files that would be mixed.

Testing  with 1 mp3 file:

mplayer test.mp3 -dumpfile stream.out

Prints some error around alsa and soundcard, and it seems to be playing
nicely in real time as takes more time to be played, but stream.out is not
created.

My  questions are:

Could be this solved anyhow creating dumpfile during real time playing?
Can be played mixed mp3 input files with mplayer via above way /dumping
output as raw or creating mp3 instead of raw/ ?
Is the  -input file=cmd.txt  option working during in real time replaying?
Eg adding to cmd.txt eg seek 10  will go the 10 sec position.

Thanks in advance,
Regards,
Zol