Whether your an avid audiophile, or an aspiring film maker, the multimedia abilities on the HTC Touch HD are sure to impress. First the unit offers support for a wide range of audio files including, but not limited to MP3, AAC, AAC+ and WMV. I tested each of those file types, mostly at bit rates above 128kb and I found that the audio playback was on par with other multimedia cell phones such as the Sony Walkman line of devices, as I mentioned earlier in my review the Bluetooth 2.0 with A2DP meant bluetooth stereo playback was not an issue whatsoever, in fact it was quick to connect and offered great playback on files over 128kb (I didn't test lower quality files since they tend to be degraded no matter where their played.
Another important aspect of the device also sits on top of the unit, the devices 3.5MM headphone jack which I didn't mention in my design view, simply because it fit better in this section. The Touch HD Audio jack located next to the power/standby button will work with most modern day headphones, this is a great option, especially for HTC considering their past devices focuses mostly on using a special USB jack that made charging the device and using your headphones annoying since you needed an attached Y-Adapter in order to use both at the same time. I tested the 3.5MM headphone jack with my Bose headphones since they almost always expose faults in audio playback and I have to say the sound was great, as an added bonus even video playback sound came through crisp and clear.
The Audio player on the Touch HD is also top notch, offering the same type of audio setup found on Apple products such as searching by Album (Displays the Album cover when available - which is most cases), Artist, Genre, and by Playlist. Users can also thumb through tracks much in the same way as the iPhone devices with just a simple swipe of their finger. Overall I really like the audio player, it offers crisp clean lines, and its very user centric making it just as easy as any well thought out audio based phone.
The video playback on the Touch HD was also very fluid, if you compare it to the iPhone or iPhone 3G you'll notice that the iPhone devices offer better dark colors, giving them more of a TV feel, while the Touch HD videos are slightly more washed out, its not a big deal in my opinion unless you're directly comparing videos at the same time. Both the iPhone and Touch HD do however offer the same fluid playback with no pausing, chopping parts, or any other major issues. Even with Edge connectivity I found that streaming videos came through nice and crisp, although they do take longer to load then the iPhone 3G and other 3G devices that operate on that network in the U.S.
The video player as I mentioned earlier in my review is also very competent, its easy to simply pull up videos, watch them in landscape mode, and then bring up your video player options by simply touching the Touch HD's 3.8 inch screen.
Overall the Audio and Video capabilities are excellent, they offer easy use, and they are very comparable to other devices on the market.