Ask S&V

Q The head unit on my new Lexus has a USB input. This feature inspired me to purchase a 32GB flash drive and rip my CD collection using Windows Media Player. I used the WMA setting with the bitrate maxed out to 192Kbps for the first few discs I ripped, and those files played back in the car without issue. For the next batch I tried both the WMA Lossless and WAV formats. Although the files played back in Windows Media Player on my PC, they wouldn't play when I plugged the drive into the head unit’s USB port. Can you explain why? —Buck CornHauler

Q I read lots about digital to analog audio converters (DACs), mostly because of high-res computer audio. Here’s my question: Why do some DACs have a digital output? If the purpose of a DAC is to convert a digital audio signal to analog, why would you want it to output the signal in digital format as well? —Jacques Simard

Q I am trying to figure out if I can use Dropbox to store both my Rdio Favorites collection and iTunes library. I have a huge iTunes library—around 600 GB. I would like to give a few friends and relatives access to the music. Is this possible?  —Jim Gold

Q I have a home theater system powered by an AV receiver for watching movies, but I also want to connect a turntable and separate stereo amp to the system’s front speakers for listening to music. If a speaker has biamp connections, can you connect two separate sources to it? I want to connect the stereo amp to the top jacks on my speakers and my AV receiver to the lower jacks. Will that work? Clint Yarborough / via e-mail

Q The 4k content I see on UHDTVs in stores looks awesome. But when I ask the salesperson to flip the feed to regular HD (from Direct TV), the picture doesn’t look nearly as good. It looks worse, in fact, than the same content shown on the standard HDTVs, and certainly worse than on my 10 year-old Sony SXRD.  My question is, if I buy a new UHDTV, how can I make the picture look as good as what I’m used to seeing on my Sony? There isn’t much 4K content yet, so what I’d mainly be watching is regular HD.—Ben Soave

Q I just signed up for Tidal music streaming and want to make sure I am getting the best sound quality from that service. My laptop is connected to my router with an Ethernet cable and then to my Onkyo pre/pro via an HDMI cable. I have the Tidal app’s settings set to HiFi.

My question is, as music streams from Tidal, does it pass through the laptop’s sound card first and then to the HDMI cable, or straight from the HDMI cable to the Onkyo pre/pro? I don’t know what sound card is equipped with the computer, and want to make sure that if streamed music does pass through, that the card isn’t detracting from the sound quality. —Andre Spits / Atlanta,GA

Q Is it possible to mirror videos (YouTube or Netflix) from my iPad to my Panasonic Viera TV while simultaneously using Bluetooth to send the audio to my receiver? —John Geloso