combining multiple channels/shoutcast

Hey gang -

I have having a problem with a Delphi application I'm writing which uses multiple independent BASS channels (multiple threads, one channel per thread).

I'd like to be able to create a "combined" stream in order to send it to a shoutcast server. Currently, the program spawns a copy of winamp with the shoutcast plugin, which uses the line input to stream the data and a convoluted method of updating the title (updating the ID3 on a dummy MP3 and telling winamp to play it - hey it works, but only in winamp 2.x).

Two problems.
1. The user must interact with the plugin for things like connecting the stream and making changes to the title/genre, etc.
2. The user must use one soundcard output for all audio to be streamed, and have another for a cue-channel.

So, I'd like to handle it all internally, and thus I have two questions.

First, the easier one (I hope).
How can I combine multiple channels into one for purposes of creating a single stream?
(I've got some code with things I've tried below, perhaps I'm on the right track?).

I think once I get that done, I'm thinking I can use some routines from BASSENC to convert it to mp3 which shoutcast will need. Which brings me to point 2.

I've got my program connecting and making the initial handshake with the shoutcast server, but then comes the hard part. Do I just send a straight mp3 stream to the server? (I haven't been able to figure it out because I haven't gotten past problem #1 yet).

Any help would be GREATLY appreciated.

Here's what I've been trying so far, based in part on some sample code posted here for something else I believe (not 100% sure).

TWaveData = array[0..2048] of dWord;

// The following code is contained within the individual thread for a single device:

procedure TAudioDevice.getBuffer( out waveData : TWaveData; out bytesRead : integer );
;
begin
if ( channel = 0 ) or ( BASS_ChannelIsActive( channel ) <> BASS_ACTIVE_PLAYING ) then bytesRead := 0
else
bytesRead := BASS_ChannelGetData( channel, @waveData, 2048 );
end;

// In the common "audio manager" which spawns the devices is the following code:

var
data : array of TWaveData;
values : array of dWord;
bytesRead : array of integer;
dn : byte;
bytes : integer;
maxBytes : integer;
waveData : TWaveData;

for dn := 0 to length( player ) - 1 do
begin
player[dn].getBuffer( data[dn], bytesRead[dn] );
maxBytes := max( maxBytes, bytesRead[dn] );
end;
for bytes := 0 to maxBytes div 4 - 1 do
begin
for dn := 0 to length( data ) - 1 do
begin
if bytes < bytesRead[dn] then values[dn] := data[dn][bytes] else values[dn] := 0;
end;
waveData[bytes] := waveSum( values ); // where the combining happens
end;

But now, I've got chunks of data, and nothing to really do with them ...

Thanks in advance for any help you can offer - even if it's just to steer me in the right direction.