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[doug2761]

While playing back audio today I switched albums and the audio went silent.  Found the following in the console tool:

12/5/13 5:29:57.000 PM kernel: USBF:   212953. 57   AppleUSBEHCI[0xffffff80070ac000]::Found a transaction which hasn't moved in 5 seconds on bus 0x24, timing out! (Addr: 3, EP: 0)
12/5/13 5:30:03.000 PM kernel: USBF:   212959. 58   AppleUSBEHCI[0xffffff80070ac000]::Found a transaction which hasn't moved in 5 seconds on bus 0x24, timing out! (Addr: 3, EP: 0)
12/5/13 5:30:05.069 PM [0x0-0xe90e9].com.jriver.MediaCenter19: Cursor at 203x101
12/5/13 5:30:05.072 PM [0x0-0xe90e9].com.jriver.MediaCenter19: Cursor at 203x101
12/5/13 5:30:09.000 PM kernel: USBF:   212965. 59   AppleUSBEHCI[0xffffff80070ac000]::Found a transaction which hasn't moved in 5 seconds on bus 0x24, timing out! (Addr: 3, EP: 0)
12/5/13 5:30:10.445 PM [0x0-0xe90e9].com.jriver.MediaCenter19: GetDiskStatistics
12/5/13 5:30:15.000 PM kernel: USBF:   212971. 59   AppleUSBEHCI[0xffffff80070ac000]::Found a transaction which hasn't moved in 5 seconds on bus 0x24, timing out! (Addr: 3, EP: 0)
12/5/13 5:30:21.000 PM kernel: USBF:   212977. 60   AppleUSBEHCI[0xffffff80070ac000]::Found a transaction which hasn't moved in 5 seconds on bus 0x24, timing out! (Addr: 3, EP: 0)
12/5/13 5:30:27.000 PM kernel: USBF:   212983. 60   AppleUSBEHCI[0xffffff80070ac000]::Found a transaction which hasn't moved in 5 seconds on bus 0x24, timing out! (Addr: 3, EP: 0)
12/5/13 5:30:28.060 PM [0x0-0xe90e9].com.jriver.MediaCenter19: Setting focus: 10FD36AF0
12/5/13 5:30:28.060 PM [0x0-0xe90e9].com.jriver.MediaCenter19: JRWndTools::StringFromWindowClass

I've noticed on several occasions that audio seems to stop.  I'm using a holiday playlist that mixes different bit depths, sample rates, and file formats and in this particular case I think the album was switching between aiff 16 bit 44k to flac 24 bit 96k.  I'm using a Macbook Air with USB out to a McIntosh C48 preamp with built in DAC.  Happy to share any other information you may find useful in debugging.

[JimH]

Some DAC's sometimes have trouble switching.  You can try using MC's DSP Studio / Output Settings to resample everything to the same bitrate and sample rate.

[doug2761]

Thanks for the tip.  If I keep having a problem I'll give that a try.  I like letting the DAC handle upsampling even though that might just be in my head.

-Doug