Hey all, I've been working with Mixxx (version 1.10 64 bit) on Kubuntu 11.04 (64 bit) using my internal sound card for master output and a set of USB headphones for cueing for a while. However, I recently got a Mixvibes U-Mix44 USB card, which I hoped would let me consolidate all my outputs to one device and reduce latency a bit in the process. I plugged it in and it was detected by Kubuntu as 'Mixvibes U-MIX44 Sound Device Analog Surround 4.0.'

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First off, I've never done any sound hardware work, so I may have just wired things wrong, and secondly, the speaker setup I'm using is somewhat old, which could also be causing the issues. The speakers I have the bare wires at the ends that go into the little clamps on the amp. I then plugged in two RCA cables into the U-Mix card and connected them into the corresponding right/left inputs on the amp. When I plugged the RCA cables into output 1 on the card, all I got was some static, so I tried #2, and that worked. However, when I plug in my headphones into the headphone jack on the card, they are also outputting.
When I actually start up Mixxx, I set the card as my master and headphones, with channels 1-2 for master and 3-4 for speakers. However, I get the same issue. If I plug the speakers into the left/right outputs numbered 1, I get nothing. If I plug them into the other two, they speakers output along with my headphones (and get turned on/off if I hit the cue button).
I've also noticed that the overall output volume of the card is very quiet even with everything maxed, but that's the least of my issues right now
Basically, I guess I just need help with setting this card up along with linux. Anyone got any pointers?
I hope I wasn't too confusing, but I'm kind of short on time right now. If I need to provide more details/ pictures of software/hardware configuration, please let me know and I'll post them tonight! Thanks!

MIXVIBES
U-MIX CONTROL
VFX CONTROL
U-MIX CONTROL PRO
U-MIX CONTROL PRO 2
U-MIX CONTROL 2

HERCULES
DJ Console 4-Mx
DJ Console Mk4
DJ Console RMX
DJ Console RMX 2
DJ Control Air
DJ Control Instinct
DJ Control MP3-e2
DJ Control Steel
DJ Control Air +

DENON DJ
DN-HC1000S
DN-MC3000
DN-MC6000
DN-S1200
DN-S3700 (hybrid mode, only compatible with Cross)
DN-SC2000
SC2900
MC2000
MC6000MKII

PIONEER
CDJ-350 *
CDJ-400 *
CDJ-850 *
CDJ-900 *
CDJ-2000 *
DDJ-ERGO
DDJ-SX
DDJ-SB
DDJ-WeGo
DJM 2000 (video plug-in only)
MEP-7000 (SEP-C1)
CDJ 900 NXS **
CDJ 2000 NXS **
DDJ-RZ
DDJ-RX
DDJ-SB2
* For Cross DJ only, for Cross: use HID control
** HID – Cross only

RELOOP
Digital Jockey
Digital Jockey 2
Digital Jockey 3 ME
Spin 2+
Terminal Mix 4
Mixtour

U Mix It

VESTAX
PMC-05ProIV
Spin 2
Typhoon
VCI-100
VCI-100MKII
VCI-300/VCI-300MKII
VCI-380
VCI-400
VCM-100

ALLEN & HEATH
Xone DX
Xone K2
Xone:23C (for K1/K2)

ELECTRIX
Tweaker

EKS
Otus

Mixvibes Dvs U Mix 44 2

NUMARK
4TRAK
4TRACK-FX
DJ2GO
iDJ3
Mixdeck
Mixdeck Quad
Mixtrack
Mixtrack 2
Mixtrack Pro
Mixtrack Pro 2
N4
Omni Control
Stealth Control
Total Control
iDJ Live II

DJ-TECH
i-Mix
i-Mix MK2
i-Mix Reload
i-Mix Reload MK2
VTT-101

AKAI
LPD 8
MPD 32

BEHRINGER
CMD Studio 4a

AKIYAMA
Kuro / K2