I'm using the version of bttv that is included in linux kernel 2.4.20 - After reading the README in Documentation/video4linux/bttv I nabbed the hcwamc.rbf file from the install download from www.hauppauge.com and put it in etc/pvr - that didn't work (I've got picture and tuning but no sound) - after looking at dmesg I noticed it was looking in /usr/lib/video4linux so I created the directory and put the file there. Still no sound. I've attached a cut from my dmesg output. Any suggestions? Thanks CP Linux video capture interface: v1.00 bttv: driver version 0.7.96 loaded bttv: using 4 buffers with 2080k (8320k total) for capture bttv: Host bridge is PCI device 8086:2550 (Intel Corp.) bttv: Bt8xx card found (0). bttv0: Bt878 (rev 17) at 02:08.0, irq: 19, latency: 132, mmio: 0xf8000000 bttv0: detected: Hauppauge WinTV/PVR [card=80], PCI subsystem ID is 0070:4500 bttv0: using: BT878(Hauppauge WinTV PVR) [card=80,insmod option] Unable to load '/usr/lib/video4linux/hcwamc.rbf'. i2c-dev.o: Registered 'bt848 #0' as minor 0 i2c-core.o: adapter bt848 #0 registered as adapter 0. bttv0: Hauppauge eeprom: model=45231, tuner=Philips FM1236 (2), radio=yes bttv0: using tuner=2 bttv0: i2c: checking for MSP34xx @ 0x80... not found bttv0: i2c: checking for TDA9875 @ 0xb0... not found bttv0: i2c: checking for TDA7432 @ 0x8a... not found tvaudio: TV audio decoder + audio/video mux driver tvaudio: known chips: tda9840,tda9873h,tda9874h/a,tda9850,tda9855,tea6300,tea6420,tda8425,pic16c54 (PV951) i2c-core.o: driver generic i2c audio driver registered. i2c-core.o: driver i2c TV tuner driver registered. tuner: probing bt848 #0 i2c adapter [id=0x10005] tuner: chip found @ 0xc2 bttv0: i2c attach [client=Philips NTSC (FI1236 and compati,ok] i2c-core.o: client [Philips NTSC (FI1236 and compati] registered to adapter [bt848 #0](pos. 0). bttv0: registered device video0 bttv0: registered device vbi0 bttv0: registered device radio0