Confusion

First of all I am a newbie to Linux and C++ Programming. So please be patient 
with me. In my home there are touchscreen controller in all of the major rooms 
built into the walls.  They are really windows 95 PC's.  I fully control an 
Audiotron through them and want to control the HD1K in a similar manner using 
Telnet. To understand what I have to do and test things out I built a VB app 
that runs on a PC and acts as a sophisticated telnet program. Below is a text 
display of a session on the program, mush of which is confusing me. Lines 
beginning with --> are what I sent to the HDK1000; all other lines are 
responses.  Things in {ALLCAPS} are comments questions and did not appear as 
telnet output.   Please help me by explaining what is going on


Connecting....
Connected to 192.168.1.101
User 'guest' is now logged on
        (THE PROGRAM NOW BEGINS SUBMITTING COMMANDS TO THE BASH PROMPT)
--> cd /usr/local/bin
cd /usr/local/bin                (THIS IS AN ECHO OF THE INPUT FROM THE HD1K)
--> mp3player -p "" &
mp3player -p  &
[1] 7185                         (WHAT IS THIS LINE?}
--> echo Background Music Started
echo Background Music Started
Background Music Started
--> sleep 2
sleep 2
(FROM HERE FORWARD IT LOOKS LIKE SOME SORT OF DEBUG DUMP; WHY AND HOW DO I GET 
RID OF IT - I.E. WHAT IS CAUSING IT)

ATI Xilleon X225-A13    (Device ID: 4855   Revision: 3)


Aper  PhysBase  Size      VirtBase  AperBase  Access
00    18000000  00010000  2aacd000  2aacd000  MM
01    08000000  08000000  2b350000  2b350000  MM
02    1c000000  04000000  33350000  33350000  MM
03    10010000  00001000  2aae5000  2aae5000  MM
07    10011000  00000100  2aae6000  2aae6000  MM
08    10011100  00000100  2aae7000  2aae7100  MM
10    00002200  00000008  00002200  00002200  IO
11    00002208  00000004  00002208  00002208  IO
12    00002220  00000010  00002220  00002220  IO
14    00000000  00008000  00000000  17350000  MM
15    00000000  00008000  00000000  17350000  MM
16    00000000  00008000  00000000  17350000  MM
17    00000000  00008000  00000000  17350000  MM
18    00000000  00008000  00000000  17350000  MM
19    00000000  00008000  00000000  17350000  MM
20    00000000  00008000  00000000  17350000  MM
22    10008000  00008000  2aadd000  2aadd000  MM



XCLK = 165 MHz
MCLK = 99 MHz
MIPS = 299 MHz


Memory Configuration: 32-bit 2-Channel DDR.
Channel 0 Size: 02000000 (32 MB)
Channel 1 Size: 02000000 (32 MB)
Total mem Size: 04000000 (64 MB)


Detecting theater...
Error: Rage theater/theater2 not found on VIP bus.


Core Version: 14.0.0.0
LLD Version:  14.0.0.0
HKD Version:  14.0.0.0


Core initialization completed.


sh: /dev/roku/audiorate: Permission denied
AudioPath::SetPCMChannelStatus(44100): 00 89 00 00 - SUCCESS
                        (FROM HERE ON IT LOOKS AS I EXPECTED IT TO)
--> ecp mp3player append /mnt/smb/server/my music/anam/riptide/This Time.mp3
ecp mp3player append /mnt/smb/server/my music/anam/riptide/This Time.mp3
mp3player: file appeneded
--> ecp mp3player Next
ecp mp3player Next
mp3player: OK
--> ecp mp3player append "/mnt/smb/server/my music/anam/riptide/house on the 
hill [reels].mp3"
ecp mp3player append /mnt/smb/server/my music/anam/riptide/house on the hi
mp3player: file appeneded
--> ecp mp3player append "/mnt/smb/server/my music/bruce springsteen & the e 
street band/live 1975-´85 (disc 2)/born in the u.s.a..mp3"
ecp mp3player append /mnt/smb/server/my music/bruce springsteen & the e st
mp3player: unable to append file  (WHY NOT)
--> ecp mp3player Quit
ecp mp3player Quit
mp3player: OK