Hi Jörg, on my W7 machine I get some failures.
I'm using a semi-pro usb soundcard, Creative E-MU 0202 USB. It's set to use 24-bit, 48 kHz as standard in shared mode. In addition, I turned off the E-MU and connected my cheap C-Media USB headset and left it set to default settings (44100 hz, 16-bit). I get some failures both in exclusive and non-exclusive mode. (And how does the test handle multiple soundcards?) E-MU, Exclusive allowed: render.c:167: Returned periods: 10.0000 ms 3.0000 ms render.c:179: pwfx: 00751AA8 render.c:180: Tag: fffe render.c:181: bits: 32 render.c:182: chan: 2 render.c:183: rate: 48000 render.c:184: align: 8 render.c:185: extra: 22 render.c:190: Res: 32 render.c:191: Mask: 3 render.c:192: Alg: FLOAT render.c:308: Returned latency: 10.6666 ms render.c:381: IsSupported(1, 44100x16x2) render.c:381: IsSupported(1, 48000x16x2) render.c:381: IsSupported(0, 48000x 8x2) render.c:381: IsSupported(0, 48000x16x2) render.c:887: Test failed: Initialize failed: 8889000f render.c:890: Test failed: GetService failed: 88890001 render.c:921: this is the last test seen before the exception render: unhandled exception c0000005 at 00409E1C E-MU, Exclusive disabled: render.c:167: Returned periods: 10.0000 ms 3.0000 ms render.c:179: pwfx: 00701AA8 render.c:180: Tag: fffe render.c:181: bits: 32 render.c:182: chan: 2 render.c:183: rate: 48000 render.c:184: align: 8 render.c:185: extra: 22 render.c:190: Res: 32 render.c:191: Mask: 3 render.c:192: Alg: FLOAT render.c:308: Returned latency: 10.6666 ms render.c:413: Test failed: Initialize(1, 44100x16x2) returns 8889000e render.c:413: Test failed: Initialize(1, 48000x16x2) returns 8889000e render.c:381: IsSupported(0, 48000x 8x2) render.c:381: IsSupported(0, 48000x16x2) render.c:887: Test failed: Initialize failed: 8889000f render.c:890: Test failed: GetService failed: 88890001 render.c:921: this is the last test seen before the exception render: unhandled exception c0000005 at 00409E1C C-Media USB headphone, Exclusive enabled: render.c:167: Returned periods: 10.0000 ms 3.0000 ms render.c:179: pwfx: 00A81AA8 render.c:180: Tag: fffe render.c:181: bits: 32 render.c:182: chan: 2 render.c:183: rate: 44100 render.c:184: align: 8 render.c:185: extra: 22 render.c:190: Res: 32 render.c:191: Mask: 3 render.c:192: Alg: FLOAT render.c:308: Returned latency: 11.6100 ms render.c:381: IsSupported(1, 44100x16x2) render.c:381: IsSupported(1, 48000x16x2) render.c:381: IsSupported(0, 44100x 8x2) render.c:381: IsSupported(0, 44100x16x2) render.c:1457: Test failed: Got wrong volume: 0.000000 render.c:1480: Test failed: Got wrong volume: 0.000000 render: 705 tests executed (0 marked as todo, 2 failures), 0 skipped. C-Media USB headphone, Exclusive disabled: render.c:167: Returned periods: 10.0000 ms 3.0000 ms render.c:179: pwfx: 009E1AA8 render.c:180: Tag: fffe render.c:181: bits: 32 render.c:182: chan: 2 render.c:183: rate: 44100 render.c:184: align: 8 render.c:185: extra: 22 render.c:190: Res: 32 render.c:191: Mask: 3 render.c:192: Alg: FLOAT render.c:308: Returned latency: 11.6100 ms render.c:413: Test failed: Initialize(1, 44100x16x2) returns 8889000e render.c:413: Test failed: Initialize(1, 48000x16x2) returns 8889000e render.c:381: IsSupported(0, 44100x 8x2) render.c:381: IsSupported(0, 44100x16x2) render.c:1457: Test failed: Got wrong volume: 0.000000 render.c:1480: Test failed: Got wrong volume: 0.000000 render: 705 tests executed (0 marked as todo, 4 failures), 0 skipped. -- -erik http://useofwords.blogspot.com/